Real stone paint marking and positioning auxiliary device

Abstract

The utility model provides a real stone paint marking and positioning auxiliary device, which comprises a laser transmitter, a fixed rod, a telescopic rod, a movable base and a positioning mechanism, the laser transmitter comprises a laser transmitting head, the telescopic rod is sleeved in the fixed rod in a sliding manner, and the telescopic rod can freely slide and be positioned relative to the fixed rod. The bottom plane of the telescopic rod and the bottom plane of the fixed rod are located on the same plane, the movable base is arranged on the telescopic rod in a sliding mode and can freely slide and be positioned relative to the telescopic rod, the laser emitting head is arranged on the upper portion of the movable base, and the laser emitting direction of the laser emitting head is perpendicular to the length direction of the fixed rod. And one end of the fixed rod and one end of the telescopic rod can be fixed on a wall surface through corresponding positioning mechanisms. The laser emitting head can be easily fixed on a high wall, then accurate positioning of a parting line can be conveniently achieved by referring to a laser horizontal line, and finally the parting quality of the real stone paint can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building outer wall real stone paint construction technical field, concretely is a kind of real stone paint scribing positioning auxiliary device. BACKGROUND

[0002] Real stone paint is a kind of building decoration material, mainly by natural stone powder, emulsion and additive, can present natural stone's texture and effect after coating, commonly used in outer wall decoration.

[0003] In actual construction process, to improve the appearance of real stone paint outer wall, real stone paint is often segmented. Before real stone paint segmentation, segmentation line positioning is needed to improve the segmentation aesthetics.

[0004] At present, when segmentation line positioning is carried out, laser level or ruler is generally used to calibrate horizontal line according to segmentation requirements. When laser level is used for calibration, after adjusting laser horizontal line, scribing is carried out on the wall surface according to laser horizontal line. When ruler is used for scribing, the ruler is fixed manually, and then scale mark is made, and scribing is carried out manually according to scale mark. When horizontal line calibration is carried out on some outer walls with high height, the position of laser level needs to be adjusted repeatedly for many times, and the position of level is adjusted in the air, which is not convenient to operate. When manual calibration is carried out by using ruler, the accuracy is poor, resulting in poor segmentation quality. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of real stone paint scribing positioning auxiliary device, it is more easy to realize the fixation of laser emission head on higher wall, in turn, it is convenient to realize the accurate positioning of segmentation line according to laser horizontal line, finally, it is beneficial to improve the segmentation quality of real stone paint.

[0006] The technical scheme adopted by the utility model to solve its technical problems is: a kind of real stone paint scribing positioning auxiliary device, including laser emitter, fixed rod, telescopic rod, mobile base, positioning mechanism, the laser emitter includes laser emission head, the telescopic rod is slidably arranged in the fixed rod, and the telescopic rod can be freely slid and positioned relative to the fixed rod, the bottom plane of the telescopic rod and the bottom plane of the fixed rod are on the same plane, the mobile base is slidably arranged on the telescopic rod, and the mobile base can be freely slid and positioned relative to the telescopic rod, the laser emission head is arranged on the upper portion of the mobile base, and the laser emission direction of the laser emission head is perpendicular to the length direction of the fixed rod, one end of the fixed rod and one end of the telescopic rod can be fixed on the wall surface by corresponding positioning mechanism.

[0007] Preferably, a first sliding groove is arranged on the upper part of the fixed rod, the telescopic rod is sleeved in the first sliding groove, a first guide groove is arranged on the left and right side walls of the first sliding groove respectively, and a guide rail is arranged on the left and right sides of the telescopic rod respectively and sleeved in the corresponding first guide groove.

[0008] Further, a first pressing positioning screw is arranged on one side of the front part of the fixed rod, and the first pressing positioning screw is used to realize the movement positioning of the telescopic rod.

[0009] Further, a T-shaped groove is arranged on the upper part of the telescopic rod, a T-shaped rod at the lower part of the moving base is sleeved in the T-shaped groove, an L-shaped plate is arranged on one side of the T-shaped rod, and a second pressing positioning screw is arranged on one side of the L-shaped plate and can press on the side wall of the corresponding fixed rod or telescopic rod.

[0010] Further, an arc-shaped supporting plate is fixedly arranged on the upper part of the T-shaped rod, and the laser emitting head is fixedly arranged on the arc-shaped supporting plate by using an arc-shaped pressing plate.

[0011] Further, a first distance measurement scale mark is arranged on one side of the upper part of the fixed rod, a second distance measurement scale mark is arranged on one side of the upper part of the telescopic rod, the measurement units of the first distance measurement scale mark and the second distance measurement scale mark are the same, and a scale pointer opposite to the first distance measurement scale mark and the second distance measurement scale mark is fixedly arranged on the lower part of the T-shaped rod.

[0012] Further, the positioning mechanism comprises a wall nail, a positioning guide seat, and a pushing mechanism, the positioning guide seat comprises an annular positioning plate and a guide pipe, the guide pipe is fixedly arranged on the annular positioning plate, and the annular positioning plate and the guide pipe are coaxially distributed, the outer end parts of the fixed rod and the telescopic rod can be rotatably sleeved in the corresponding guide pipe, the wall nail can be sleeved in the guide pipe, the outer side wall of the wall nail is fitted with the inner side wall of the guide pipe, and the pushing mechanism is arranged on the wall nail and can press the corresponding fixed rod or telescopic pipe on the annular positioning plate.

[0013] Further, the pushing mechanism comprises a pushing nut and a spring, an external thread is arranged on the upper half of the wall nail, the pushing nut is sleeved on the external thread of the wall nail, and the spring is sleeved on the wall nail and clamped between the pushing nut and the corresponding fixed rod or telescopic rod.

[0014] Further, a limiting ring is arranged at the end of the guide pipe away from the annular positioning plate.

[0015] Further, a first bubble level and a second bubble level are fixedly arranged at the upper portion of the fixed rod, the first bubble level is horizontally arranged perpendicularly to the fixed rod, and the second bubble level is vertically arranged along the fixed rod.

[0016] The utility model discloses the beneficial effect is: the utility model simple structure, processing and manufacturing are convenient, utilize the distance measurement scale mark of fixed rod and telescopic link upper setting can realize the accurate shift of laser emission head, and then can guarantee the subsequent scribe accuracy, and, after once fixedly good fixed rod and telescopic link, can move scribe for many times, and then benefit the improvement scribe efficiency, the fixed rod can rotate freely around the catheter, thereby when carrying out the vertical fixation of fixed rod, can realize the vertical free placement of fixed rod, and then can guarantee the perpendicularity of fixed rod, make the laser line of laser emission head emission keep horizontal state, guarantee scribe accuracy, the wall nail can be vertically fixed on the wall body by utilizing annular positioning plate, and then convenient for its vertical fixation on the wall body, and the wall nail is vertically fixed on the wall body, then convenient for subsequent fixed rod and telescopic link are all horizontally pressed annular positioning plate, thereby make fixed rod and telescopic link along the wall surface parallel distribution, and then benefit the improvement horizontal division line's demarcation accuracy, utilize the second bubble level and can assist the detection fixed rod and telescopic link horizontal distribution situation on the wall body outside, thereby can effectively guarantee in the demarcation accuracy of vertical division line of utilizing the utility model carries out. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are part of the preferred embodiments of the present utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the whole structure test diagram of the utility model;

[0020] Figure 3 It is the front view of positioning mechanism;

[0021] Figure 4 It is the relative distribution schematic diagram of mobile base and laser emission head;

[0022] Figure 5For Figure 1 Enlarged view at A in the middle;

[0023] Figure 6 For Figure 2 Enlarged view at B in the middle;

[0024] Figure 7 For Figure 2 Enlarged view at C in the middle;

[0025] In the figure: 11 laser emitting head, 2 fixed rod, 21 first sliding groove, 22 first top pressing positioning bolt, 23 first distance measuring scale mark, 3 telescopic rod, 31 T-shaped groove, 32 guide rail, 33 second distance measuring scale mark, 4 moving base, 41 T-shaped rod, 42 L-shaped plate, 43 second top pressing positioning bolt, 44 arc-shaped supporting plate, 45 arc-shaped pressing plate, 46 scale pointer, 5 positioning mechanism, 51 positioning guide seat, 511 annular positioning plate, 512 guide tube, 513 limiting ring, 52 wall nail, 53 pushing nut, 54 spring, 61 first bubble level, 62 second bubble level. DETAILED DESCRIPTION

[0026] The specific embodiments will be described below with reference to the accompanying drawings. Figures 1-7 The technical solutions in the embodiments of the utility model are clearly and completely described, obviously, the described embodiments are only a part of the preferred embodiments of the utility model, not all the embodiments. The skilled in the art can make similar modifications without departing from the connotation of the utility model, therefore, the utility model is not limited by the specific embodiments disclosed below.

[0027] The utility model provides a kind of real stone paint scribing positioning auxiliary device (such as Figure 1The utility model discloses a laser horizontal line position adjustable device (as shown), including laser emitter, fixed rod 2, telescopic rod 3, mobile base 4, positioning mechanism 5, the laser emitter includes laser emission head 11, and laser emitter is the mature technology product known in the market, so here, the working principle and structure of laser emitter no longer make detailed explanation, in practical application, laser emitter sends laser through laser emission head 11, telescopic rod 3 is slidably arranged in fixed rod 2, and telescopic rod 3 can freely slide and position relative to fixed rod 2, the bottom plane of telescopic rod 3 and the bottom plane of fixed rod 2 are on the same plane, utilize telescopic rod 3 and fixed rod 2 above-mentioned bottom plane design features, it is favorable to realize fixed rod 2 and telescopic rod 3 and the parallel distribution of wall surface, mobile base 4 is slidably arranged on telescopic rod 3, and mobile base 4 can freely slide and position relative to telescopic rod 3, laser emission head 11 is arranged on the upper portion of mobile base 4, and the laser emission direction of laser emission head 11 is perpendicular to the length direction of fixed rod 2, in practical application, when fixed rod 2 and telescopic rod 3 are fixed on the wall surface, then through the position of laser emission head 11, then realize the change of laser horizontal line position, and then can realize the demarcation of horizontal line on different height, and after telescopic rod 3 is completely pulled out, then can realize the position adjustment of laser emission head 11 multiple times, then realize once positioning, multiple times demarcation, to improve the demarcation efficiency, one end of fixed rod 2 and one end of telescopic rod 3 can be fixed on the wall surface through corresponding positioning mechanism 5.

[0028] On the basis of the above embodiment, the specific implementation of the free sliding and positioning of the telescopic rod 3 on the fixed rod 2 is that the fixed rod 2 and the telescopic rod 3 are both square rods, a first sliding groove 21 is arranged on the upper portion of the fixed rod 2, the telescopic rod 3 is sleeved in the first sliding groove 21, a first guide groove is arranged on the left and right side walls of the first sliding groove 21 respectively, a guide rail 32 sleeved in the corresponding first guide groove 21 is arranged on the left and right sides of the telescopic rod 3 respectively, in order to improve the sliding stability of the fixed rod 2 and the telescopic rod 3, the outer side wall of the guide rail 32 is matched with the inner side wall of the first guide groove, further, in order to facilitate the fixing of the telescopic rod 3 on the fixed rod 2, a first pressing positioning bolt 22 is arranged on the front side of the fixed rod 2, the first pressing positioning bolt 22 is used for realizing the positioning of the telescopic rod 3, when the telescopic rod 3 needs to be fixed, the first pressing positioning bolt 22 is tightened, when the telescopic rod 3 needs to be moved, the first pressing positioning bolt 22 is loosened first, then the position of the telescopic rod 3 is adjusted, after the position adjustment of the telescopic rod 3 is completed, the first pressing positioning bolt 22 is tightened again. By using the telescopic movement adjustment characteristics of the fixed rod 2 and the telescopic rod 3, the carrying and storage of the utility model are facilitated.

[0029] On the basis of the above embodiment, the specific implementation of the free sliding and positioning of the telescopic rod 3 on the fixed rod 2 is that the fixed rod 2 and the telescopic rod 3 are both square rods, a first sliding groove 21 is arranged on the upper portion of the fixed rod 2, the telescopic rod 3 is sleeved in the first sliding groove 21, a first guide groove is arranged on the left and right side walls of the first sliding groove 21 respectively, a guide rail 32 sleeved in the corresponding first guide groove 21 is arranged on the left and right sides of the telescopic rod 3 respectively, in order to improve the sliding stability of the fixed rod 2 and the telescopic rod 3, the outer side wall of the guide rail 32 is matched with the inner side wall of the first guide groove, further, in order to facilitate the fixing of the telescopic rod 3 on the fixed rod 2, a first pressing positioning bolt 22 is arranged on the front side of the fixed rod 2, the first pressing positioning bolt 22 is used for realizing the positioning of the telescopic rod 3, when the telescopic rod 3 needs to be fixed, the first pressing positioning bolt 22 is tightened, when the telescopic rod 3 needs to be moved, the first pressing positioning bolt 22 is loosened first, then the position of the telescopic rod 3 is adjusted, after the position adjustment of the telescopic rod 3 is completed, the first pressing positioning bolt 22 is tightened again. By using the telescopic movement adjustment characteristics of the fixed rod 2 and the telescopic rod 3, the carrying and storage of the utility model are facilitated.

[0030] On the basis of the above embodiment, the specific implementation of fixing and installing the laser emitting head 11 on the moving base 4 is that an arc-shaped support plate 44 is fixedly arranged on the upper portion of the T-shaped rod 41, the laser emitting head 11 is fixedly arranged on the arc-shaped support plate 44 by using an arc-shaped pressing plate 45, specifically, the arc-shaped pressing plate 45 and the arc-shaped support plate 44 are fixedly connected by using the bolt connection mode, when the arc-shaped pressing plate 45 is fixed on the arc-shaped support plate 44, the arc-shaped pressing plate 45 is used to stably press the laser emitting head 11 on the arc-shaped support plate 44. In order to improve the stability of the laser emitting head 11 on the arc-shaped support plate 44, a rubber pad can be arranged on the inner side wall of the arc-shaped support plate 45 and the arc-shaped pressing plate 44.

[0031] On the basis of the above embodiment, the specific implementation of realizing the accurate movement of the laser emitting head 11 on the fixed rod 2 and the telescopic rod 3 is that a first distance measurement scale mark 23 is arranged on one side of the upper portion of the fixed rod 2, a second distance measurement scale mark 33 is arranged on one side of the upper portion of the telescopic rod 3, the measurement units of the first distance measurement scale mark 23 and the second distance measurement scale mark 33 are the same, when the telescopic rod 3 is extended from the fixed rod 2, the position of the telescopic rod 3 is appropriately adjusted, so that a certain scale line of the first distance measurement scale mark 23 coincides with a certain scale line of the second distance measurement scale mark 33, so that the first distance measurement scale mark 23 and the second distance measurement scale mark 33 can be used as a distance measurement scale mark, thereby ensuring the movement positioning accuracy of the laser emitting head 11; a scale pointer 46 opposite to the first distance measurement scale mark 23 and the second distance measurement scale mark 33 is fixedly arranged on the lower portion of the T-shaped rod 41, the top end of the scale pointer 46 is coaxially arranged with the laser beam of the laser emitting head 11.

[0032] On the basis of the above embodiment, the specific implementation of the positioning mechanism is that the positioning mechanism 5 comprises a wall nail 52, a positioning guide seat 51, and a pushing mechanism. The positioning guide seat 51 comprises an annular positioning plate 511 and a guide pipe 512. The guide pipe 512 is fixedly arranged on the annular positioning plate 511, and the annular positioning plate 511 and the guide pipe 512 are coaxially distributed. The outer end of the fixed rod 2 and the outer end of the telescopic rod 3 can be rotatably sleeved on the corresponding guide pipe 512, that is, the fixed rod 2 or the telescopic rod 3 can be freely rotated around the corresponding guide pipe 512. In order to improve the rotation stability of the fixed rod 2 and the telescopic rod 3, the outer side wall of the guide pipe 512 is fitted with the inner side wall of the through hole on the fixed rod 2 and the telescopic rod 3. The wall nail 52 can be sleeved in the guide pipe 512, and the outer side wall of the wall nail 52 is fitted with the inner side wall of the guide pipe 512. In actual application, only when the wall nail 52 is vertically inserted into the wall surface, can it be ensured that the annular positioning plate 511 can be stably fitted with the wall surface, thereby ensuring that the fixed rod 2 or the telescopic rod 3 is finally distributed horizontally relative to the wall surface, thereby improving the placing accuracy of the laser emitting head 11. In actual application, when it is needed to vertically insert the wall nail 52 into the wall surface, the annular positioning plate 511 is first pressed against the wall surface, then the wall nail 52 is inserted into the guide pipe 512, and then the wall nail 52 is forced into the wall surface. By using the guiding effect of the guide pipe 512, the wall nail 52 is vertically inserted into the wall surface. The pushing mechanism is arranged on the wall nail 52, and the pushing mechanism can press the corresponding fixed rod 2 and telescopic pipe 3 against the annular positioning plate 511. Specifically, the pushing mechanism comprises a pushing nut 53 and a spring 54. An external thread 521 is arranged on the upper half of the wall nail 52. The pushing nut 53 is sleeved on the external thread 521 of the wall nail 52. The spring 54 is sleeved on the wall nail 52, and the spring 54 is clamped between the pushing nut 53 and the corresponding fixed rod 2 and telescopic rod 3. By rotating the pushing nut 53 to push the spring 54 to move in the direction of the fixed rod 2 and the telescopic rod 3, the spring 54 finally presses the fixed rod 2 or the telescopic rod 3.In practical application, when the fixed rod 2 needs to be vertically fixed, the spring 54 is first not pressed against the fixed rod 2, and then the fixed rod 2 is allowed to freely rotate around the guide pipe 512, so that the fixed rod 2 can freely vertically drop, after the annular positioning plate 512 is fixed on the wall surface by the wall nail 52, the fixed rod 2 is freely dropped, and when the fixed rod 2 is stably vertically dropped, the spring 54 is rotated to stably press the fixed rod 2 on the annular positioning plate 511, and then the fixed rod 2 is fixed, after the fixed rod 2 is stably fixed, the telescopic rod 3 is stably fixed, and then the outer end of the telescopic rod 3 is fixed on the wall surface by the wall nail 52, and then the telescopic rod 3 is stably pressed on the corresponding annular positioning plate 511 by the spring 54, and then the both ends of the utility model are vertically fixed on the wall surface, further, in order to prevent the guide pipe 512 from being separated from the end of the fixed rod 2 or the telescopic rod 3, a limiting ring 513 is arranged at the end of the guide pipe 512 away from the annular positioning plate 511.

[0033] In practical application, the utility model can be vertically arranged on the wall surface or horizontally arranged on the wall surface, in order to improve the accuracy of the vertical or horizontal arrangement of the utility model on the wall surface, a first bubble level 61 and a second bubble level 62 are fixedly arranged on the upper portion of the fixed rod 2, the first bubble level 61 is horizontally arranged perpendicular to the fixed rod 2, and the second bubble level 62 is vertically arranged along the fixed rod 2, when the utility model is vertically arranged, the vertical state of the fixed rod 2 can be calibrated according to the horizontal state of the first bubble level 61, when the first bubble level 61 is horizontally placed, the fixed rod 2 is vertically placed, when the utility model is horizontally arranged, the horizontal state of the fixed rod 2 can be calibrated according to the horizontal state of the second bubble level 62, when the second bubble level 62 is horizontally placed, the fixed rod 2 is horizontally placed, and then the utility model is horizontally placed, when the utility model is vertically fixed on the wall surface, the horizontal line positioning and calibration can be realized by the laser emitting head 11, and then the horizontal division line is drawn, when the utility model is horizontally fixed on the wall surface, the vertical line positioning and calibration can be realized by the laser emitting head 11, and then the vertical division line is drawn.

[0034] In the utility model, "upper", "lower", "front", "rear", "left" and "right" are relative positions for the convenience of describing the positional relationship, and therefore cannot be understood as absolute positions for limiting the protection scope.

[0035] In addition to the technical features described in the specification, they are known technologies of the professional technical personnel.

[0036] The preferred embodiments and examples of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments and examples, and for ordinary skilled in the art, some improvements and modifications can be made without departing from the concept of the utility model, and these improvements and modifications should also be considered as the protection scope of the utility model.

Claims

1. A stonewash line marking positioning aid device, characterized in that, The utility model provides a laser emitter, fixed rod, telescopic rod, mobile base, positioning mechanism, the laser emitter includes laser emission head, telescopic rod is sleeved in fixed rod, and telescopic rod can freely slide and position relative to fixed rod, the bottom plane of telescopic rod and the bottom plane of fixed rod are on the same plane, mobile base is slidably arranged on telescopic rod, and mobile base can freely slide and position relative to telescopic rod, the laser emission head is arranged on the upper portion of mobile base, and the laser emission direction of laser emission head is perpendicular to the length direction of fixed rod, one end of fixed rod and one end of telescopic rod can be fixed on the wall through corresponding positioning mechanism.

2. A real stone paint scribing positioning auxiliary device according to claim 1, characterized in that, in The upper portion of the fixed rod is provided with a first sliding groove, the telescopic rod is sleeved in the first sliding groove, a first guide groove is arranged on the left side wall and the right side wall of the first sliding groove respectively, and a guide rail is arranged on the left and right sides of the telescopic rod respectively.

3. A true stone paint scribing positioning aid according to claim 2, wherein, A first pressing positioning bolt is arranged on one side of the front part of the fixed rod, and the first pressing positioning bolt is used to realize the mobile positioning of the telescopic rod.

4. A true stone paint scribing positioning aid according to claim 3, wherein the scribing guide is a groove formed in the base plate. A T-shaped groove is arranged on the upper portion of the telescopic rod, a T-shaped rod at the lower portion of the mobile base is slidably sleeved in the T-shaped groove, an L-shaped plate is arranged on one side of the T-shaped rod, a second pressing positioning bolt is arranged on one side of the L-shaped plate, and the second pressing positioning bolt can press on the side wall of the corresponding fixed rod or telescopic rod.

5. A true stone paint scribing positioning aid according to claim 4, wherein the scribing guide is a groove formed in the base plate. An arc-shaped supporting plate is fixedly arranged on the upper portion of the T-shaped rod, and the laser emission head is fixedly arranged on the arc-shaped supporting plate by using an arc-shaped pressing plate.

6. A true stone paint scribing positioning aid according to claim 5, wherein the scribing guide is a groove formed in the base plate. A first distance measurement scale mark is arranged on one side of the upper portion of the fixed rod, a second distance measurement scale mark is arranged on one side of the upper portion of the telescopic rod, the measurement units of the first distance measurement scale mark and the second distance measurement scale mark are the same, and a scale pointer opposite to the first distance measurement scale mark and the second distance measurement scale mark is fixedly arranged on the lower portion of the T-shaped rod.

7. A true stone paint scribing positioning aid according to any one of claims 1 to 6, wherein, The positioning mechanism comprises a wall nail, a positioning guide seat, a pushing mechanism, the positioning guide seat comprises an annular positioning plate and a guide pipe, the guide pipe is fixedly arranged on the annular positioning plate, and the annular positioning plate and the guide pipe are coaxially distributed, the outer end portions of the fixed rod and the telescopic rod can be rotatably sleeved in the corresponding guide pipes, the wall nail can be sleeved in the guide pipe, and the outer side wall of the wall nail is fitted with the inner side wall of the guide pipe, and the pushing mechanism is arranged on the wall nail and can press the corresponding fixed rod or telescopic pipe on the annular positioning plate.

8. A true stone paint scribing positioning aid according to claim 7, wherein, The pushing mechanism comprises a pushing nut and a spring, the upper half of the wall nail is provided with external threads, the pushing nut is sleeved on the external threads of the wall nail, and the spring is sleeved on the wall nail and clamped between the pushing nut and the corresponding fixed rod or telescopic rod.

9. A true stone paint scribing positioning aid according to claim 8, wherein, A limiting ring is arranged on the end of the guide pipe away from the annular positioning plate.

10. A true stone paint scribing positioning aid according to claim 9, wherein the scribing guide is a groove formed in the base plate. The upper part of the fixed rod is fixedly provided with a first bubble level and a second bubble level, the first bubble level is horizontally arranged perpendicular to the fixed rod, and the second bubble level is vertically arranged along the fixed rod.

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