142 results about "Yardstick" patented technology

This Measuring and Drafting Tool relates to a new and useful type of measuring and drafting tool that may be used to accomplish a plurality of functions using a singular tool. These functions include application as a ruler, straight edge, T-square, square or squaring tool, center gage, an edge transcribing and duplicating tool, and as a tool for striking circles and circle arcs. Some modified embodiments of the Measuring and Drafting Tool are also capable of angle measurement and protractor functions, and may also include one or more bubble levels incorporated into the ruler segments, thereby allowing the user to check if a horizontal surface is level.

A system for positioning and drilling in cabinet, drawer, and shelf hardware components generally having a self-centering ruler and a jig template. The ruler has a zero mid-point and graduated measurement markings extending to each side of the zero mid-point toward opposite ends. A channel is disposed along a length of the ruler and has a generally T-shaped cross-section and is configured to slidingly receive a head of the securing bolt. The jig template has an adjustment slot configured to receive a stem of the securing bolt extending from an opening of the channel. A tightening knob securingly engages the stem of the securing bolt so as to secure the jig template between the tightening knob and the self-centering ruler.

A improved combination degree finding and linear measuring instrument for directly indicating the degree, or angle, to be used for cutting and thereafterwards joining of the cut material items is disclosed, consisting of a pair of blade-shaped arms pivotally secured to each other at one end thereof to matingly conform to the inside or the outside engaged angle corresponding to the angle of the two pieces of the material which are to be joined. The true angle for accurately and precisely mating the material items to be cut is directly determined based upon a precise measurement of the pair of blade-shaped arms directly read as true angle measured which is indicated through an first offset sight aperture disposed over a first 180 degree scale and one-half of the angle indicated through the first offset sight aperture is indicated through a second offset sight aperture on the second 180 degree scale located on the opposite side of the instrument from the first offset sight aperture and the first 180 degree scale. Each of the arms includes measuring scales thereon for use as a ruler. The pair of blade-shaped arms are pivotally secured at one end of the pair of blades and can be pivotally adjusted to arrange the pair of arms to form a single long measuring arm at 180 degrees and locked into position by the threaded set screw and nut used to pivotally secure the pair of blades together. In fact, the pair of blades can be pivotally adjusted to form any angle between the blades.

The invention provides a laser azimuth instrument used for measuring coal mine downhole drilling azimuth. The laser azimuth instrument comprises an angle ruler, a scale, a sliding seat, a laser instrument and a spirit level, the angle ruler is a fan-shaped frame which is formed by enclosing of two radial borders and an arc-shaped border, graduations are arranged on the arc-shaped border, the scale is a strip plate, one end of the scale is rotationally connected to the circle center position of the fan-shaped frame, an observation hole is arranged at the position, corresponding to the graduations, at the other end of the scale, the sliding seat is provided with a bottom plate, a mounting hole is arranged on the bottom plate, the laser instrument is arranged inside the mounting hole, the spirit level is fixed on the bottom plate which is slidingly connected with the scale, the fan-shaped frame, the strip plate and the bottom plate are parallel to one another, and an observation hole is arranged at the position, corresponding to the mounting hole, on the strip plate in the length direction. The fan-shaped frame achieves accurate measurement and solves the technical problem of measurement inaccuracy due to external disturbance in the prior art.

The invention relates to a high-precision double-wheel shaft double-vernier earth's axis precession demonstration and quantitative measurement experiment instrument, which comprises a base, a motor, a cross beam, a rotating disk, a balance weight, wheel shafts, a cross beam support frame, a precession rotation head shaft, a right vernier scale vertical rod, a left vernier scale vertical rod, a main ruler and main ruler disc and a hollow support column. The motor is fixedly arranged at the right end of the cross beam; the rotating disk is fixedly arranged on a motor shaft; the balance weight is sleeved in a slide groove in the left end of the cross beam; outer edges of the two wheel shafts are clamped in a wheel shaft sleeve; the precession rotation head shaft is fixedly sleeved in inner edges of the two wheel shafts; the upper end of the precession rotation head shaft is fixedly provided with the cross beam support frame; the right vernier scale vertical rod and the left vernier scale vertical rod are connected at the right and left sides of the precession rotation head shaft respectively; the main ruler and the main ruler disc are sleeved in the middle portion of the hollow support column; the precession rotation head shaft is arranged at the upper end of the hollow support column; and a cross beam shaft of the cross beam is sleeved on a rotation shaft of the cross beam support frame. The beneficial effects of the experiment instrument are that the experiment instrument is reasonable in structure and good in experiment effect.

The invention relates to a tool and a method for measuring an angular difference of a tool face of an oil field drilling instrument. The tool is characterized by comprising a platy aiming tool, a tubular aiming tool and a sighting telescope, wherein the platy aiming tool comprises a scale panel; an M-shaped open slot is formed inward along the middle part of one side of the scale panel; a V-shaped scale is arranged at the other side of the scale panel; a positioning rod is arranged at the symmetry center of the top of the V-shaped scale of the platy aiming tool; one end of the V-shaped scale of the platy aiming tool is provided with a hinge and the other side of the V-shaped scale is provided with calipers; the tubular aiming tool comprises a tubular scale; one end of the tubular scale is provided with a V-shaped scale; a positioning rod is fixed at the symmetry center of the top of the V-shaped scale of the tubular aiming tool; one end of the V-shaped scale of the tubular aiming tool is provided with a hinge and the other side of the V-shaped scale is provided with calipers; the sighting telescope comprises a telescope frame; the telescope frame comprises two lateral plates and a middle cross board; a rotating shaft is arranged on the two lateral plates and in front of the middle cross board; the rotating shaft is rotationally connected with a mirror plane; and a V-shaped notch is arranged upward at the middle position of the bottom of the cross board of the telescope frame.

The invention discloses a stable and adjustable drawing board for art design. The stable and adjustable drawing board comprises a platen and a drawing board body, wherein a pigment groove, a pen groove and a tool groove are formed in the front side of the top of the platen, the rectangular drawing board body is hinged to the rear side of the top of the platen through a hinge, an elastic clamp is installed at the upper end of the drawing board body, a sliding rail mechanism is installed on the left side of the drawing board body, a scale plate is installed on a sliding block of the sliding railmechanism, a telescopic rod is arranged on the rear side of the drawing board body, a conical support is arranged at the bottom of the platen, the upper end of a supporting rod is fixed to the middleof the bottom of the conical support and is in sleeved connection with a sleeve, and multiple supporting legs are circumferentially arranged on the outer side of the sleeve. The stable and adjustabledrawing board is stable in supporting and convenient to adjust in height and drawing board inclination angle, facilitates placement of pigments, pens and tools, facilitates scraping of excessive pigments on the pens, can achieve size comparison through the scale plte and is convenient to use and operate.

The invention discloses a three-line pendulum facilitating control of a pendulum angle. The three-line pendulum provided by the invention comprises a support, a three-line pendulum, a photoelectric gate and a timer, and further comprises a miniaturized laser and an angle scale, wherein the miniaturized laser is fixed at the center of the lower surface of a lower disc, the angle scale is fixed at a position, which has the same height as the miniaturized laser, on a vertical rod of the support, the miniaturized laser emits laser rays towards the angle scale along a horizontal direction, and the miniaturized laser swings along with the lower disc and indicates the pendulum angle of the lower disc through position change of a laser line on the angle scale. The structure is simple, the practicality and the convenience are high, the pendulum angle of the three-line pendulum can be visually indicated, an experimenter can conveniently control the size of the pendulum angle, and the moment of inertia of a rigid body can be accurately determined.

A putter with a distance measurement mechanism comprises a shaft, a head disposed on an end of the shaft, and a grip disposed on an opposite end of the shaft, wherein the grip comprises a through-hole is formed on an end of the grip, and an indication member having a scale extending from the through-hole toward the shaft. The scale may comprise marks indicating at least one of a distance to a cup and a recommended backswing amount. The player looks at a cup on a green as the player holds the putter, positioning an end of the grip at eye's level, the player reads off the scale of the grip to estimate the distance to the cup and the recommended backswing amount.

The invention provides a method for measuring the slag thickness and headroom of a steel ladle. The method comprises the following steps of: coating a slag thickness scale by taking the ground of a platform in the rear of a furnace as a carrier and a 0 point as a starting point; coating a headroom scale by taking an upper surface of a sampling hole of the platform in the rear of the furnace and the vertical height of a steel ladle edge as a datum point; inserting the other end of a steel pipe coating with a mark into molten steel vertically, so that the mark of the steel pipe is parallel and level with the upper surface of the sampling hole; and pulling the steel pipe out of the molten steel, and aligning the inserting end of the steel pipe with the starting point of the scale so as to compare the slag thickness and headroom of the steel ladle. By the method, the slag thickness and headroom of the steel ladle can be measured simultaneously in one time without investments, so the method is simple, convenient to operate, time-saving, labor-saving and visual and clear; and the data information of the slag thickness and headroom of the steel ladle can be mastered quickly to adjust loading quantity in time, so the slag blocking success rate of a slag blocking mark of a converter is improved, the tapping slag amount of the converter is reduced, the pollution of slag to the molten steel is reduced, and the yield of smelted alloy is stabilized.

The invention discloses a vernier type comprehensive gauge for a hole. The vernier type comprehensive gauge comprises a gauge body with scale marks, a handle reference block, a vernier and an aperture measurement mechanism arranged on the gauge body, wherein an inner sliding cavity of which the two ends are open is formed in the handle reference block; the gauge body is adaptively arranged in the inner sliding cavity in a sliding penetration manner; the scale marks are axially arranged on the gauge body; a vernier embedding opening communicated with the inner sliding cavity is further formed in the circumferential surface of the handle reference block; the vernier is embedded into the vernier embedding opening; the aperture measurement mechanism comprises an aperture measurement main scale, a pair of radial verniers and a pair of internal diameter clamping legs; a radially through notch is formed between the two ends of the gauge body; the aperture measurement main scale is arranged in the notch in a penetration manner, exposed to the two sides of the notch, and perpendicular to the axis of the gauge body; the two radial verniers are connected to the aperture measurement main scale in a sliding manner, and are symmetrically distributed on the two sides of the axis of the gauge body. According to the vernier type comprehensive gauge, aperture and hole depth measurement accuracy can be improved, the vernier type comprehensive gauge is convenient to use, and working efficiency can be obviously improved.

The invention discloses a manufacturing method of colloid a code disk / yardstick, which uses a colloid sheet with the light transmittance of more than 90 percent and the high temperature resistance performance of up to 120 DEG C as the base material; only the colloid sheet with the thickness of less than 0.5nm and the material of PET or PC are preferable for making the code disk / yardstick; the method comprises the following steps: firstly, the surface of the sheet is plated with a layer of membrane with the material of chromium and aluminium and the thickness of about below 1Mum in an evaporation way; and a photoresist is coated on the membrane with the material of chromium and aluminium so as to form a layer of photoresist membrane with the thickness of about 1 to 3Mum; then the Fehling mother matrix of a grating pattern of the code disk / yardstick, which is drawn by a photoplotter, is covered on the photoresist membrane which is caused to sense light by the exposure irradiation of parallel lights; afterwards, the photoresist membrane which does not sense the light is washed off; steeping sluggish corrosion of about tens of seconds is carried out to the colloid sheet by corrosion liquid, and the part of the photoresist membrane which senses the light is washed off after the corrosion is finished, therefore, the engraving and making of the grating pattern of the code disk / yardstick is finished; and then the grating pattern is placed in an optical punch, and under automatic position punching alignment, the disk-shaped code disk or strip yardstick is formed to be used for an encoder or an optical scale.

An audio type signal is encoded. The signal is first divided into bands. For each band, a yardstick signal element is selected. The yardstick may be the signal element having the largest magnitude in the band, the second largest, closest to the median magnitude, or having some other selected magnitude. This magnitude is used for various purposes, including assigning bits to the different bands, and for establishing reconstruction levels within a band. The magnitude of non yardstick signal elements is also quantized. The encoded signal is also decoded. Apparatus for both encoding and decoding are also disclosed. The location of the yardstick element within its band may also be recorded and encoded, and used for efficiently allocating bits to non-yardstick signal elements. Split bands may be established, such that each split band includes a yardstick signal element and each full band includes a major and a minor yardstick signal element.

The invention discloses a round hole centering circle tool, which is used for centering round holes and describing circles on sections when round hole sections of different apertures are mechanically machined. The round hole centering circle tool mainly comprises a central shaft housing, a gear mandrel, a first rack arm, a second rack arm, a third rack arm, an angle dial, a staff circle describing arm, a fastening bolt, a fixing bolt, a handle and the like. The circle tool is suitable for centering inner holes of different apertures and describing the circles on the sections, in particular has more remarkable application effect on the inner holes of large apertures, has the characteristics of simple structure, simple and convenient mounting, simple operation method, accurate centering, convenient storage and convenient carrying, and can be used in relatively severer environments.

An adjustable ruler of the band saw machine includes: a ruler-guider plugs in the band saw machine over the bench and a mesh portion along the long axis on one side of the ruler-guider. There is a holder on the extending end of the ruler-guider. An active wheel pivots in the band saw machine and gears with the mesh portion of the ruler-guider. An axis plugs on the band saw machine. One end of the axis extends out of the band saw machine and another end combines with the active wheel. A knob with scales around the surface mounts on the extending end of the axis.

A triangle ruler includes a triangle ruler body defining three corners, three sides, opposing first surface and second surface surrounded by the three sides and three corners and a recessed annular scale located at the center thereof, and a direction indicator including a pendulum and a pointer and being pivotally connected to the center of the recessed annular scale in such a manner that the axial direction of the direction indicator passes through the first and second surfaces of the triangle ruler body, and the effects of the weight of the direction indicator keeps one end of the pointer to constantly indicate a predetermined direction. Thus, the invention combines the functions of a conventional protractor and a conventional triangle ruler to facilitate drawing a variety of different angles of lines.

The invention discloses a linear long-distance absolute value position optical encoder, belongs to the technical field of displacement sensors and aims to overcome the limitation of a rotary encoder in short-distance transportation precise positioning detection. The linear long-distance absolute value position optical encoder comprises a yardstick, a reading head and a signal processing circuit. The reading head moves forth and back in a straight line in the length direction of the yardstick and scans the yardstick. The yardstick is provided with an address code grating and a clock period grating. According to the invention, the reading head and yardstick separated structure is adopted, the yardstick is installed and fixed to a suitable position, parallel to an operation rail, of the ground, and the yardstick is provided with the corresponding address code grating; in addition, the reading head scans the yardstick in movement, a signal processing circuit determines scanned address codes fixed on the yardstick in real time and determines the practical position of the reading head relative to the yardstick.

A plurality of novel depth of cut scales are eccentrically inscribed on faces of circular cutting blades. The depth of cut marks on the scales are line segments that are easily lined up with the sole of a hand held circular saw, with the table of a table saw, or with the workpiece surface of a radial arm saw or a sliding miter saw. The accuracy of setting the depth of cut is greatly improved by the novel construct of the scales, which provides depth of cut index marks that are separated from each other by a distance larger than the difference between the indicated depths. The circular cutting blades with the novel depth of cut scales can be used in any cutting tool utilizing circular cutting blades without any modifications and without any additional external tools or instruments. The scales provided by present invention resolve to as small a distance as 1 / 32 of an inch on English units scales or to 0.5 mm on SI units scales. The resolution of scales so constructed increases as the diameter of the blade increases which is beneficial for table and radial arm saws using significantly larger blades than hand held saws.

The invention provides a device for measuring a casting blank cut with a specified length, which is used for measuring the cut casting blank on a blank discharging and weighing roller way. The device comprises a scale with graduations, wherein the scale is arranged on the side wall of the blank discharging and weighing roller way and is flush with the blank discharging and weighing roller way. During work, the casting blank travels in a measurement range, one end of the casting blank is opposite to a certain point on the scale, the other end of the casting blank is opposite to the other graduation on the scale, and the graduation on the scale is read out at the time; the actual size of the cut casting blank can be obtained through calculation; the process is only required to be finished by an operation staff and the operation staff can be away from the device for a distance to avoid manual measurement of the operation staff; and therefore, the safety of the operation staff is protected, and the labor intensity of the operation staff is relieved.

The invention provides an online real-time measuring device for the outer diameter of a traction steel wire rope. The device comprises a traction steel wire rope pre-tightening guide structure, a vernier scale measuring structure and a door-shaped framework slide structure, wherein the traction steel wire rope pre-tightening guide structure comprises a pre-tightening wheel, a pre-tightening wheelbracket, a guide wheel, a guide wheel bracket and a spring bracket; the traction steel wire rope pre-tightening guide structure presses a to-be-measured steel wire rope between the pre-tightening wheel and the guide wheel through a compression spring, the spring bracket and the pre-tightening wheel bracket; the outer diameter of the steel wire rope is worn to cause changes of the diameter size topush the pre-tightening wheel to horizontally move in a radial direction; and the guide wheel can limit a steel wire rope from horizontal shake to reduce errors caused by shock. A pre-tightening boltand a slide slot can be conveniently mounted on a steel structure, close to the steel wire rope, of an elevator machine room; and when multiple elevators steel wire ropes are arranged in parallel, theonline real-time measuring device solves the problem of measuring the diameter of the steel wire rope inside in space, and realizes online real-time measurement on the outer diameter changes of the traction elevator steel wire ropes.

The invention relates to the field of fabric performances testing, in particular to a device for testing super-hydrophobic fabric slide angles. The device comprises a sample carrier board, a bottom board, rulers and a hand screw. The sample carrier board is used for holding a sample, one end of the sample carrier board is connected with the bottom board through a hinge, and the other end is a free end. A water tank with one end open is arranged on the sample carrier board. Three round holes are arranged in the bottom board, and a nut is arranged at each round hole. The hand screw drives the free end to rotate around the hinge by using the round holes and the nuts as a lifting mechanism. The two rulers are adhered on the bottom board and are used as a fixing unit and a measurement unit. Water drops are dropwise added on the test sample, the positions that the water drops start to slide or stop sliding are observed by raising or lowering of the sample carrier board, readings on the rulers are recorded, and the fabric slide angles are obtained by calculation. The device is simple in structure, easy to operate, low in cost and high in practicality.

The invention discloses an automatic distance adjustment binocular camera support suitable for a transformer substation and a distance adjustment method of the automatic distance adjustment binocularcamera support. The automatic distance adjustment binocular camera support comprises a support base. The two ends of the support base are symmetrically and fixedly provided with stepping motors correspondingly. Each stepping motor is sleeved with a stepping motor shell. A sliding rod is erected between the stepping motor shells. The sliding rod is sleeved with objective tables capable of sliding on the sliding rod. A camera base is fixedly arranged on the outer side face of each objective table. A camera is erected on each camera base. A lead screw is embedded among the objective tables and the sliding rod. Lead screw grooves are formed in the bottom faces of the objective tables and cooperate with a nut of the lead screw. The stepping motors can drive the lead screw to rotate, and then the lead screw drives the objective tables to slide on the sliding rod. The application range is wide, the distance between the two cameras can be automatically adjusted, and automatic updating and calculating are achieved; and a scaleplate is arranged, after the base line distance of the cameras is automatically adjusted by the motors, a new base line distance can be visually read, the adjustment precision is high, and the operation efficiency is improved.

Groove-type paper scoring apparatus according to the invention comprises a platform providing a planar rectangular work surface. On the platform are a series of transversely spaced shallow score channels extending longitudinally from one end of the platform to the other. Shallow boundary walls extend along the side edges and the distal end of the platform. The distal end wall of the platform is provided with spaced vertical notches each mating with an associated one of the series of score channels. A scale or ruler extends along each of the walls.

The invention discloses an open-pit-mine muck-pile measuring marking method and a used group reference scale. The group reference scale comprises a scale body and a group-reference-scale connecting frame, wherein the scale body is of a stretchable structure formed by an outer caliper, a stretchable scale and an inner caliper, and the outer caliper, the stretchable scale and the inner caliper are sequentially sleeved from outside to inside; a waterproof plug is arranged at the end of the inner caliper, and is connected with the outer caliper through an elastic hanging rope; measuring ropes areput in the inner caliper; the group-reference-scale connecting frame comprises an upper clamping groove, a lower clamping groove and a rotating pair, the upper clamping groove is connected with the lower clamping groove through the rotating pair, and the scale body is clamped in the upper clamping groove or the lower clamping groove during using. The open-pit-mine muck-pile measuring marking method and the used group reference scale meet the unmanned-aerial-vehicle rapid measurement flight requirement, reading is accurate, the group reference scale has a division value from the millimeter level to the meter level, and is convenient, easy and reliable in operation and suitable for different sites and climates. Muck-pile real-time state parameters are provided, lumpiness statistic sampling is wider and more reliable, personal errors are reduced, measuring efficiency is improved, and a more-accurate data reference is provided for open-pit-mine step blasting charge and step blasting effectcontrolling.

The invention discloses a pair of multifunctional compasses. On the basis of a current compass structure (P), the pair of multifunctional compasses is characterized in that an arc scale plate (F) which separately shows angle indication scales (t) and length indication scales (u) is arranged on one compass leg (3); besides, the arc center of the arc scale plate (F) coincides with a central shaft (2) at the end parts of two compass legs (3); the distances from the central shaft (2) of the compasses (P) to two pin points (4) are identical; the intervals of the length indication scales (u) on the arc scale plate (F) are constrained by the identical distances; the intervals of the angle indication scales (t) are identical, and are determined according to the scales of a conventional protractor; and the intervals of the length indication scales (u) are determined according to an integrated cosine law, are unequal, and are constrained by the distances from the pair of pin points (4) to the central shaft (2). The technique is crucially characterized in that the cosine law that c<2> equals a<2> plus b<2> minus 2abcosC is integrated into a more practical equation, namely, c<2> equals 2b<2>(1 minus cosC), and design and use of the compasses are directed by the latter equation.

The invention provides a right-angle ruler for measuring the radius of curvature of outer circle and its measuring method, which belong to the technical measurement field and solve the technical problems that the radiuses of curvature of objects in different shapes cannot be accurately and rapidly measured and that the conventional method is not universal in terms of applications. The ruler of the invention comprises a right angle ruler short edge and a right angle ruler long edge wherein the length of the former is a known fixed value and the latter is provided with calibrations. The right angle ruler short edge is absolutely perpendicular to the right angle ruler short edge and the two are integrated as one. According to the invention, it is possible to measure the radiuses of curvature of circles, cylindrical forms, spherical shapes and fillets in its measurement scope. For its large measurement scope and accuracy, the ruler is very adaptive in application. The measuring method of the invention is also convenient and accurate.

The invention discloses a multifunctional measuring instrument which comprises a horizon measuring scale, a smoothness measuring scale and two standard members. At least one external surface of each standard member is provided with a magnet. The top of the horizon measuring scale is provided with a horizontal guiderail. The two standard members are respectively arranged at two ends of the top of the horizon measuring scale. The smoothness measuring scale is arranged between the two standard members. The two standard members and the smoothness measuring scale are arranged on the horizontal guiderail and can perform left-and-right sliding along the horizontal guiderail. Two ends of the horizon measuring scale are respectively provided with a verticality measuring bubble. The middle part of the horizon measuring scale is provided with a horizon measuring bubble. The multifunctional measuring instrument provided by the utility model has multiple measurement uses and low manufacture cost.