102 results about "Vernier scale" patented technology

The utility model relates to the technical field of crack detection, and particularly discloses a bridge crack detection device which comprises a sleeve, a pull rod and a displacement sensor, main scale scales are arranged on the pull rod, a vernier scale which is attached to the outer side of the pull rod and extends in the axial direction is fixed to the sleeve, vernier scale scales are marked on the vernier scale, and the minimum division value of the vernier scale scales is smaller than the minimum division value of the main scale scales. In the working process of the bridge crack detection device, when an electronic element breaks down, crack data can be temporarily obtained in a scale reading mode, and monitoring interruption is avoided. In the process of monitoring the crack state based on the sensing system, crack data can be regularly obtained through scale readings, so that the precision of the sensing system is verified, a closed-loop quality control system of automatic monitoring and manual verification is formed, the accuracy of the crack data is improved, and working abnormity of the sensing system can be found in time. The bridge crack detection device is ingenious and reasonable in structure and high in practicability.

The invention relates to a system and method for a transformer pressure deformation test. The system comprises a data acquisition module, a data processing module, a data transmission module and a control module. The data acquisition module comprises an infrared distance meter, a bracket and a fixed base, and the bracket is used for connecting the infrared distance meter and the fixed base; the infrared distance meter is connected with the data transmission module and the data processing module, the data transmission module is connected with the data processing module, and the data processing module is connected with the control module; the infrared distance meter is combined with the data transmission and processing technology, real-time monitoring and accurate measurement of dynamic deformation in the transformer pressure deformation test are achieved, the defects of a traditional vernier caliper measurement method in the aspects of precision and real-time performance are overcome, the automation level and safety of the test are improved, and meanwhile the test efficiency is improved. As a plurality of fixed brackets are not required to be arranged around and on the top of the transformer as reference points, the preparation work before the test is simplified, and the test efficiency and accuracy are improved.

The utility model provides an improved vernier caliper, which comprises a main scale and is characterized in that the outer wall of the main scale is provided with a detachable depth measuring assembly in a sliding manner; the left side of the lower part of the main scale and the left side of the lower part of the detachable depth measurement assembly are respectively and fixedly connected with an outer measuring jaw, and the detachable depth measurement assembly is located on the right side of the outer measuring jaw connected with the main scale; the left front side of the upper part of the main scale and the rear upper side of the left part of the detachable depth measurement assembly are respectively and fixedly connected with an inner measuring jaw; a sliding groove is formed in the middle rear side in the main scale; the detachable depth measurement assembly is further arranged in the sliding groove in a sliding mode. Through the arrangement of the vernier scale, the internal thread sleeve, the threaded rod and the depth measuring rod, the depth measuring rod can be conveniently detached, and the problem that the depth measuring rod falls to the ground and deforms can be effectively avoided.

The frog point rail detection measuring tool is provided with a ruler body of a T-shaped structure, and a left supporting vernier scale, a right supporting vernier scale and a section vernier scale are installed on the ruler body in a horizontal sliding mode. A depth vernier scale is slidably mounted on a vertical ruler of the ruler body and is matched with a fastening screw; the vertical height difference between the lower end supporting block of the supporting vernier scale and the tip of the lower end clamping jaw of the section vernier scale is 16mm; the left and right section vernier gauges detect the section width of the working edge of the point rail; a detection rod of the depth vernier scale vertically slides and is used for making contact with the top of the point rail, the extending length of the lower end of the detection rod corresponds to the lowering value height of the top of the point rail, and the depth vernier scale is used for detecting the lowering value height of the point rail. The device can be applied to delivery inspection or on-line abrasion detection occasions of the combined frog; the detection precision and the detection efficiency of the section width and the reduction value height of the point rail are improved, and product quality judgment is quickly made.

The utility model provides a height gauge, and belongs to the technical field of measuring tools. The problem that a height gauge zeroing structure is complex is solved. The height gauge comprises a base with a reference surface, a main scale which is vertical to the reference surface and is arranged upwards is fixed on the base, a vernier scale capable of sliding along the main scale is sleeved on the main scale, a convex mounting arm is arranged on the side surface of the vernier scale, and the height gauge further comprises a round-rod-shaped marking pin, the mounting arm is provided with a mounting hole which is inclined upwards relative to the reference surface, the scriber is arranged in the mounting hole in a penetrating manner and can slide along the mounting hole, the mounting arm is in threaded connection with a locking bolt which can lock the scriber on the mounting arm, and the downward end of the scriber extends out of the mounting hole and is provided with a conical tip; and the inclination angle of the mounting hole relative to the reference surface is half of the tip taper angle. The height gauge is convenient in zero setting and simple in structure.

The invention discloses a wafer back alignment method, which comprises the following steps of: converting micron-sized offset between a first alignment mark and a second alignment mark into visual scale alignment judgment by taking one of a first scale and a second scale as a main scale and the other one as a vernier scale, so that the reading precision of + / -0.1 mu m can be realized under a microscope image; compared with + / -0.5 [mu] m in the prior art, the temperature is increased by 5 times; in the chip back alignment method, an ultraviolet lithography machine (MA6 / MA8) is adopted to etch alignment marks and scales, and then an electron beam exposure machine (EBL) is adopted to etch a final optical structure, so that the optimal balance of efficiency and cost is realized while the submicron alignment precision is ensured.

The utility model relates to a hydrocyclone sand setting nozzle measuring device which comprises a main body shell and a lead screw, the lead screw is transversely and rotatably arranged in the main body shell through rotating shafts at the two ends, the lead screw is connected with a moving plate through a ball nut, and the outer edge of the moving plate is attached to the inner wall of the main body shell. The movable plate is vertically and symmetrically connected with a plurality of guide columns parallel to the lead screw, the other ends of the guide columns slidably penetrate through the main body shell and then are connected to a guide plate, and a first probe is installed on the outer side of the guide plate; a driving device and a dustproof shell are arranged on the end, away from the guide plate, of the body shell, the output end of the driving device is connected to the lead screw, and a second probe is installed on the outer side of the dustproof shell. According to the measuring device, the two probes are attached to the inner wall of the sand setting nozzle to measure the inner diameter of the sand setting nozzle in a high-precision mode, meanwhile, the sliding groove marked with vernier scales and the sliding rod are combined to further verify the measuring results of the two probes, the measuring accuracy is improved, the abrasion condition of the sand setting nozzle can be accurately and effectively evaluated, and guidance is provided for maintenance or replacement of the sand setting nozzle.

The invention provides a ruler for geological mapping, and relates to the field of geological mapping. Comprising a rectangular-ambulatory-plane ruler body, a first moving strip and a second moving strip, main scale lines are arranged on four sides of the rectangular-ambulatory-plane ruler body, and a zero scale line of the rectangular-ambulatory-plane ruler body is located at an intersection point of two adjacent right-angle sides; the first moving strip and the second moving strip are mutually crossed and are respectively parallel to different groups of opposite sides of the concentric-square-shaped ruler body, the end parts of the first moving strip and the second moving strip are respectively in sliding connection with the concentric-square-shaped ruler body through the vernier scale block, the vernier scale block is provided with vernier scale marks, and the minimum scale division of the vernier scale marks is smaller than the minimum scale division of the main scale marks; strip-shaped holes are formed in the first moving strip and the second moving strip in the length direction; the width of the strip-shaped hole is not less than 2mm; the second moving strip is located above the first moving strip, a positioning block is connected to the second moving strip in a sliding mode, and a round hole with the diameter being 2 mm is formed in the positioning block. The geological point location can be quickly, accurately and normatively marked on the geological mapping field hand graph, and the method is simple to operate and convenient to carry.

The invention discloses a method and a system for measuring the layer thickness of a multilayer hollow pipe fitting based on image recognition, and relates to the technical field of multilayer hollow pipe fitting detection, and the technical key points are as follows: firstly, enhancing boundary features through multi-band image fusion preprocessing, and offsetting dimensional deviation by combining dynamic environment compensation and residual stress correction; through multi-dimensional verification and error correction, the measurement precision reaches a preset high-precision standard and is obviously superior to that of traditional vernier caliper measurement and ultrasonic measurement; secondly, a stable chromatic aberration boundary is constructed through a color master adaptation rule, and the influence of material pores, defects and distribution uniformity is avoided; meanwhile, through the technologies of self-adaptive noise reduction, dynamic measurement density adjustment and the like, the influence of factors such as ambient light interference and boundary complexity is resisted, and the measurement reliability is ensured; in addition, the color masterbatch adaptation rule can be dynamically adjusted according to optical characteristics and forming process parameters of different materials, the method is suitable for various complex multilayer hollow pipe fittings, and a measurement scheme does not need to be redesigned for specific pipe fittings.

The utility model relates to road construction is used measuring instrument technical field discloses a kind of high delay elastic ultra-thin wearing course thickness measuring device, including empty cylinder, inner plug rod, limit disc and vernier caliper;The inner plug rod is straight rod structure with conical head formed at bottom, and movably set in the inside of empty cylinder, after the bottom of empty cylinder is closed, the bottom end surface is reserved with the inner plug rod just passing through the perforation, the limit disc of the inside of the inside of empty cylinder is formed with the movable sleeve in the lower part of inner plug rod, and the vernier caliper is formed with the upper part of middle part.Compared with prior art, the advantages are that: after guaranteeing the bottom disc of empty cylinder is placed on the high delay elastic ultra-thin wearing course laid, the inner plug rod is pressed to let its bottom insert into high delay elastic ultra-thin wearing course, until the inner plug rod just passes through high delay elastic ultra-thin wearing course, then the scale reading on empty cylinder and vernier scale reading on vernier caliper are combined, the laying thickness of high delay elastic ultra-thin wearing course can be accurately measured, and measurement operation is more convenient and efficient.

The utility model discloses a combined type gap measuring scale which comprises a first plate body and a second plate body which are respectively formed by three edges connected end to end, any acute angle edge of the first plate body is provided with scale marks, the scale marks are composed of a plurality of length scale lines, and the length scale lines are arranged on the first plate body. The numerical value represented by each length scale line is the distance from the point of the length scale line on the acute angle side to the other acute angle side, the second plate body is a right triangle, and at least one edge of the second plate body is provided with an indexing mark. According to the utility model, the first plate body and the second plate body are matched for use, so that other obstacles around cannot interfere with the caliper during measurement; the right angle can be used to determine whether to be perpendicular to the measured object. According to the utility model, the integrated characteristic of a vernier caliper is abandoned, mechanical structures such as a combined bayonet are not provided, the overall structure is simple, the manufacturing cost is low, and the measurement precision is improved.

The utility model relates to the technical field of measuring tools, and discloses a pipe fitting measuring tool, which comprises a main scale, a vernier scale is arranged outside the main scale, a depth gauge is arranged on one side of the rear end of the vernier scale, a first fastening screw is arranged at the upper end of the vernier scale, outer measuring claws are arranged at the lower ends of the vernier scale and the main scale, and the depth gauge is arranged at the lower end of the vernier scale. Inner measuring claws are arranged at the upper ends of the vernier scale and the main scale; the number of the front shells is two, a first fixing plate is slidably mounted in the left front shell, a second fixing plate is slidably mounted in the right front shell, a magnet is mounted on the right side of the lower end of the first fixing plate, an insertion pipe is mounted outside the magnet, and an iron insertion rod is mounted on the left side of the lower end of the second fixing plate. And side rods are arranged at the lower ends of the outer sides of the first fixing plate and the second fixing plate. According to the utility model, the side rod is additionally arranged outside the outer measuring claw, so that the inner groove in the pipe fitting can be measured conveniently.

The utility model relates to a vernier straight rod ruler measuring device for a wide-range inner hole, and belongs to the technical field of object dimension measurement. According to the technical scheme, one end of a ruler frame (1) is provided with a ruler frame cover plate (2) and a vernier scale (8), and the other end is provided with a second measuring head (9); one end of the main ruler body (5) is provided with a measuring head I (6), and the other end of the main ruler body (5) is slidably arranged in a space formed by the ruler frame (1), the ruler frame cover plate (2) and the vernier (8); a spring shaping rod (10) is arranged in the ruler frame (1), and a spring (11) is sleeved on the spring shaping rod (10); the main ruler body (5) is provided with a cavity (21), the spring shaping rod (10) and the spring (11) are both arranged in the cavity of the main ruler body (5), and the spring (11) moves through stretching and retracting of the main ruler body (5). The beneficial effects of the utility model are that the device is high in measurement precision, is wide in measurement range, can rapidly deal with the switching of measurement of different sizes, and improves the measurement work efficiency.

The utility model discloses an asphalt mixture Marshall test piece thickness measuring device which comprises a base, a digital display vernier caliper is fixed to the base, an L-shaped connecting rod is fixed to one side of a vernier scale of the digital display vernier caliper, a measuring top plate capable of being located in a Marshall test mold is fixed to the lower end of the L-shaped connecting rod, and a measuring bottom plate is fixed to the base through a vertical connecting rod. And a plurality of leveling bolts are screwed on the lower side of the base. The method comprises the following steps: after compaction of an asphalt mixture Marshall test piece is finished, immediately taking off paper on two surfaces by using tweezers, pressing a measuring top plate and a measuring bottom plate, carrying out zero setting, separating the measuring top plate from the measuring bottom plate, putting the bottom surface of the test piece on the measuring bottom plate, pressing the measuring top plate to enable the measuring top plate to be attached to the top surface of the test piece, at the moment, the numerical value displayed on the digital display screen on the vernier scale is the height of the asphalt mixture Marshall test piece. According to the measurement mode, the height of the test piece can be measured only by placing the test piece and the test mold on the measurement bottom plate, so that the height measurement convenience and accuracy of the test piece can be improved.

The utility model discloses a measuring device. The measuring device comprises an adapter and a measuring rod. The measuring base of the depth vernier caliper is in contact with the second end of the adapter, the first end of the adapter is in contact with the reference surface of the to-be-measured workpiece, the caliper body measuring end of the depth vernier caliper is in contact with one end of the measuring rod, and the other end of the measuring rod is in contact with the measured surface of the to-be-measured workpiece. Meanwhile, the positioning cylinder and the workpiece to be detected are positioned and fixed. The length of the measuring rod is equal to the distance from the first end to the second end of the adapter, so that the moving distance of the caliper body of the depth vernier caliper relative to the measuring base is equal to the moving distance of the measuring rod relative to the adapter. The auxiliary device for measuring the depth solves the problem that the depth vernier caliper cannot directly measure the depth size due to the special structure of the workpiece to be measured, avoids the situation that the depth size can be obtained only through multiple times of measurement and calculation in the related technology, and has the characteristics of few measurement steps, few measurement data, no need of calculation and high measurement precision.

The present invention belongs to the field of bearing measurement, and in particular relates to a bearing groove size measuring tool and a measuring tool. The bearing groove size measuring tool comprises a guide sleeve and a measuring mechanism mounted on the guide sleeve, the guide sleeve being used to be fixedly connected to one of the jaws of a vernier caliper, a measuring cylinder being provided at one end of the measuring mechanism, the measuring cylinder being a C-shaped structure that can be detached along its axial direction, the outside of the measuring cylinder being marked with a scale, the inner hole of the measuring cylinder being used to place a steel ball and being a tapered hole that gradually shrinks away from the guide sleeve, a tightening body for pushing the steel ball being slidably mounted on the measuring cylinder along its axial direction, one end of the tightening body being inserted from the opening of the C-shaped structure and being provided with a reading structure that matches the reading of the measuring cylinder scale. This avoids the problem of low measurement efficiency caused by multiple trial clamping due to inappropriate steel ball size during direct ball clamping measurement, as well as the lack of limit fixation of the steel ball and the difficulty in clamping and controlling it so that it falls, thereby facilitating the measurement of bearings of different specifications and improving measurement flexibility.

The utility model discloses a monitoring device for vertical displacement of a main beam during replacement of a beam type bridge support, and solves the problem that the traditional vertical displacement monitoring equipment such as a dial indicator, a pull rope type displacement meter, a laser displacement meter and a steel ruler is low in measurement accuracy and precision due to the fact that the traditional vertical displacement monitoring equipment is not placed vertically or the resolution ratio of a measuring tool is insufficient. The vertical displacement monitoring point is arranged on the side face of the pier cap or the abutment cap, and the depth vernier caliper is used for measuring the distance between the vertical displacement monitoring point and the bottom of the main beam, so that the monitoring precision and accuracy of the vertical displacement of the main beam are improved to a great extent, and the deviation of field sensor installation and alignment is eliminated; and the process of measuring the vertical displacement change of the main beam on site is simplified. And meanwhile, compared with the conventional measurement that a monitoring point is exposed to the outside, the monitoring point is transformed on the premise that the monitoring point is greatly damaged by man-made or environment. The method and the device have good economic practicability, are convenient to operate and are suitable for large-scale popularization and application.

The utility model discloses a measuring tool for detecting positions of multiple holes in a cylindrical surface, which comprises a fixed base, a rotatable fillet measuring assembly and a fixedly arranged height measuring assembly are arranged on the fixed base, and a detected piece is fixedly arranged on the fillet measuring assembly. The angle difference and the height difference between a hole in the cylinder and a certain hole can be obtained by rotating the fillet measuring assembly to drive the measured piece to rotate together. According to the measuring tool for detecting the positions of the holes in the cylindrical surface, the principle of equal angles in the same sector and the principle that a vernier caliper measures the movement of a measured piece are ingeniously utilized, and the change of angle dimensions is reflected on the circular angle scale turntable; compared with conventional hole position measurement such as three-coordinate measurement, the method is more economical, convenient and rapid.

The utility model relates to a special detection tool for a pipeline valve. The special detection tool comprises a detection rod, a detection column and a leveling instrument, leveling of the detection column is achieved through the horizontal ruler, and through contact matching of the detection rod and the detection column, the position relation between the vernier scale mark and the detection rod, the position relation between the main ruler scale mark and the detection column and the matching relation between the vernier scale mark and the main ruler scale mark, the detection accuracy is improved. The hole system deviation value can be accurately read through the reading mode of the vernier caliper; according to the tool, the hole system position relation of the machined and formed valve body can be directly reflected on the tool, the hole system deviation value can be quantified, and the hole position can be directly detected and judged according to the set standard.

The utility model discloses a caliper capable of being expanded to measure small-diameter holes, which comprises a main scale and a vernier scale, and the main scale comprises a left inner claw located below the left side of a main scale body and a left outer claw located above the left side of the main scale body. The vernier scale comprises a movable right inner claw located below the main scale body and a movable right outer claw located above the main scale body, the right inner claw is located on the right side of the left inner claw, the right outer claw is located on the right side of the left outer claw, the left inner claw and the right inner claw form a pair of inner measuring claws, and the left outer claw and the right outer claw form a pair of outer measuring claws. The top end cutting edge forming side face of the inner measuring claw and the top end cutting edge forming side face of the outer measuring claw are both semicircular cutting edges. According to the utility model, on the basis of keeping the measuring function and precision of the original caliper type measuring tool, the measuring precision of the small-diameter hole with the aperture of # imgabs0 # can be met, the accurate measurement of the machining precision of the small-diameter hole in the production field is ensured, the production precision and the production efficiency are improved, and the measuring tool is suitable for various precision machinery manufacturing places.

A novel embedded locking amount measuring tool comprises a vernier caliper, the vernier caliper comprises a main ruler and an auxiliary ruler, the bottom of one end of the main ruler is provided with a front claw extension rod, and the back of the bottom end of the front claw extension rod is provided with a front claw vertically connected with the front claw extension rod. A rear claw extension rod matched with the front claw extension rod is arranged at the bottom of one end, close to the front claw extension rod, of the auxiliary ruler, a rear claw vertically connected with the rear claw extension rod is arranged at the back of the bottom end of the rear claw extension rod, and the rear claw is longer than the front claw; the lock hook is knocked to a proper central position and placed in the measuring tool, the front claw hooks the part, needing to be measured, of the hook head, then the rear claw is pushed, the part, needing to be measured, of the boss of the locking rod is clamped, the reading is displayed, the caliper is taken out, and the reading is carried out. According to the utility model, the operation time can be shortened, and the measurement error is reduced to a great extent.

This utility model relates to a boring template device for measuring the thread of oil casing pipes. The technical solution includes a main scale and a vernier scale. The main scale has upper and lower measuring jaws on its upper and lower ends, respectively. The upper edge of the main scale body has a lower inner diameter limit scale and an upper inner diameter limit scale. A vernier scale is fitted onto the main scale body. The left end of the vernier scale body has upper and lower measuring jaws, and the left end faces of the upper and lower measuring jaws are not on the same vertical line. The horizontal difference between the two is the boring limit difference. The beneficial effect is that by moving the position of the vernier scale body, it is possible to quickly determine in batches whether the bore opening of the corresponding product is too small or too large. Since the left end faces are not on the same vertical line, the difference is fixed, making it suitable for measuring the inner diameter of bores of various products with consistent boring tolerances, significantly improving measurement efficiency.

The application discloses a vernier caliper reading recognition method for intelligent supervision and related equipment, and the method comprises the following steps: acquiring the image of the vernier caliper reading by using a camera, the camera is adjusted according to a preset rule in advance, and the vernier scale of the vernier caliper is equally divided according to a preset specification; determining whether the vernier caliper in the image is a digital caliper or a scale caliper by using a trained target detection model; if the vernier caliper is determined as a digital caliper, performing character recognition on the image to obtain the target reading of the vernier caliper; if the vernier caliper is determined as a scale caliper, acquiring the main scale reading and the vernier scale reading of the vernier caliper based on the image, and determining the target reading of the vernier caliper based on the main scale reading and the vernier scale reading. The application can automatically read the reading of the vernier caliper, and the reading can be displayed in smart glasses, thereby improving the electronic degree of the supervision of the power equipment.

The utility model relates to the field of measuring tools, and particularly discloses a vernier caliper capable of automatically locking a vernier scale, which comprises a main scale and the vernier scale, a groove is arranged at the bottom of the vernier scale, a pressing rod is arranged in the groove, one end of the pressing rod is provided with a positioning column and a driving lever, the positioning column is used for abutting against the side surface of the main scale, and the driving lever can be pressed by a user after penetrating through the vernier scale. The vernier scale and the main scale are only in sliding connection, the positioning column is attached to the side face of the main scale by applying pressure through the pressing rod, and the position of the vernier scale is temporarily fixed. When the vernier scale is used, the vernier scale can be slid by a single hand and the deflector rod is pressed by a thumb, so that the positioning column is temporarily separated from the main scale, and the vernier scale can slide smoothly.

The invention relates to a mechano-electronic integrated linear displacement measuring device and application thereof. The device comprises a casing, a displacement measuring sliding rod, a vernier scale body, a vernier scale sliding block and memory sliding blocks positioned on two sides of the vernier scale sliding block, wherein the displacement measuring sliding rod telescopically slides relative to the casing; the vernier scale sliding block and the memory sliding block are connected with the vernier scale body and slide along the vernier scale body in a reciprocating mode. The vernier scale body is fixed with the casing; the vernier slide block is connected with the displacement measurement slide bar; a measured object is fixed to the displacement measurement sliding rod, when the measured object moves, the displacement measurement sliding rod drives the vernier scale sliding block to move relative to the vernier scale body, and the linear movement amount of the measured object is obtained by reading the vernier scale sliding block. Compared with the prior art, the method has the advantages that power supply is not needed, displacement measurement data can be quickly and conveniently read, and the maximum displacement value can be measured.

The utility model relates to a flatness detection die. The flatness detection die comprises a base part, a fixing part, a detection part, a horizontal adjusting part and a first height adjusting part. The Z-shaped part mold has the advantages that the detection part is connected with the horizontal adjustment part through the first height adjustment part, so that the height from the detection groove to the base part can be adjusted through the first height adjustment part, the Z-shaped part mold can adapt to different types of Z-shaped parts, and the applicability of the whole mold is improved; besides, the detection die is simple in structure, convenient to operate and low in cost, and compared with a mode that workers need to use precise measuring tools such as vernier calipers and micrometers for detection, the detection time can be greatly shortened, the detection efficiency can be improved, the labor intensity can be reduced, and the production efficiency can be improved. Compared with CCD visual detection, the method can be suitable for producing wired parts, the detection cost is reduced, and the detection range is widened.

The utility model relates to a Young modulus experimental instrument for a metal wire, which comprises a base, a bracket, a steel wire rope upper chuck, a steel wire rope lower chuck, a tension part, a tension sensor, a displacement connecting part, an optical lever placing platform, a three-foot tip seat, a laser emitting part, a vernier caliper support frame and a vernier caliper, the laser emitting part is installed on the three-foot tip seat, the measuring block on the displacement connecting part penetrates through the optical lever placing platform and is connected with the optical lever placing platform in a sliding mode, and a laser beam of the laser emitting part can vertically and downwards directly irradiate a vernier of the vernier caliper. According to the Young modulus experiment instrument for the metal wire, the displacement variation of a laser projection point of the laser emitting part is read through the vernier caliper, the measurement precision is high when the Young modulus experiment instrument is used, a telescope and a reflecting mirror are not used, only the three-foot tip seat and the vernier caliper need to be adjusted, the workload of adjustment preparation before an experiment is reduced, and the experiment efficiency is improved.

The utility model discloses a mechanical large-diameter thread outer diameter measuring device, which comprises a bottom plate, and two positioning sliding rods and two measuring sliding rods which are arranged on the bottom plate, and the two positioning sliding rods can move relatively along the upper surface of the bottom plate, so that the two positioning sliding rods are close to each other to radially clamp a boss of a workpiece to be measured. The two measuring sliding rods can move relatively along the upper surface of the bottom plate, so that the two measuring sliding rods are close to each other and respectively cling to two sides of a thread of a to-be-measured workpiece, scale marking lines are arranged on the upper surface of the bottom plate, and the lower ends of the measuring sliding rods are aligned with the scale marking lines. The length limit of an outer measuring claw of a vernier caliper is broken through, the large-diameter thread diameter measuring device is suitable for measuring the outer diameter of a large-diameter thread, the measurable thread diameter range is wide, the large-diameter thread diameter measuring device is particularly suitable for batch detection of a production line, personal errors are reduced through a positioning sliding rod and scale marks, the measuring precision and stability are improved, only three steps of fixing, pulling and reading are needed during operation, the single-time measuring time is short, and the efficiency is improved. The operation process is simplified, and stable fixation, automatic adaptation and rapid reading are achieved.

The utility model belongs to the technical field of metering equipment, and particularly relates to an automatic quantitative metal measuring vessel which comprises a measuring vessel body, a metering neck arranged on the measuring vessel body, a reading vernier scale, a siphon, a liquid storage tank and a siphon pump, and the reading vernier scale, the siphon, the liquid storage tank and the siphon pump are arranged on one side of the metering neck. The liquid outlet is lower than the liquid inlet; the liquid outlet is connected with the siphon pump, one end of the siphon pipe extends into the metering neck in the gravity direction and is located on the same horizontal plane with the scale value calibrated by the vernier of the reading vernier scale, the other end of the siphon pipe is connected with the liquid inlet, and siphonage is generated through the siphon pump, so that the liquid level in the metering neck is lowered to the scale of the calibrated volume. The process of manual reading through naked eyes is avoided, the metering accuracy of the metal meter is improved, liquid pre-stored in the liquid storage tank can avoid dry pumping of the siphon pump, and the effects of protecting the siphon pump and prolonging the service life of the siphon pump are achieved.