Measuring device for urban and rural planning map

Abstract

The utility model relates to the technical field of urban and rural planning, and provides a measuring device for an urban and rural planning map. The two ends of the positioning rod are arranged at the upper ends of the two supports respectively; the number of the measuring assemblies is two, the measuring assemblies are arranged on the positioning rod in a sliding mode, and each measuring assembly comprises a sliding block arranged on the positioning rod in a sliding mode; the section of the sliding rail is C-shaped, the sliding rail is provided with a front opening, and the sliding rail is arranged on one side of the sliding block; the indicating rod is arranged on one side of the sliding rail and located beside the front opening. The measuring rod is slidably arranged on the sliding rail and is perpendicular to the positioning rod, the outer side of the measuring rod is provided with length scale marks parallel to the axis direction, and the indicating rod is located on the outer side of the measuring rod and is opposite to the length scale marks; wherein one end of the distance measuring rod is arranged on one sliding block, the other end of the distance measuring rod is arranged on the other sliding block, and the distance measuring rod is used for measuring the distance between the two measuring rods. According to the technical scheme, the method can be well suitable for distance measurement on a planar graph and measurement of a three-dimensional space on a sand table.

Description

Technical Field

[0001] The utility model relates to the technical field of urban and rural planning, in particular to a measuring device for urban and rural planning drawings. Background Art

[0002] In the process of urban and rural planning and construction, it is necessary to carry out design planning according to the needs of the planned land. In the planning process, it is necessary to use diagrams to display the planning effects. Although information technology is developing rapidly now, the three-dimensional spatial display effect using the screen is better, but urban and rural planning design still cannot be separated from the two forms of diagrams, including two-dimensional plane diagrams and sand table stereo diagrams. When measuring and displaying on the plane diagram and sand table, data measurement is often required, and reasonable planning and utilization of space are required. At the same time, a more detailed display effect is shown during explanation or exhibition. The existing measuring devices are generally only used to measure the actual distance of the land, lacking the measuring device for the diagram structure, and cannot be well applied to the distance measurement on the plane diagram and the measurement of the three-dimensional space on the sand table. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a measuring device for urban and rural planning drawings in view of the above-mentioned technical deficiencies, which can be well applied to distance measurement on a plane map and measurement of three-dimensional space on a sand table.

[0004] The technical solution adopted by the utility model is: to provide a measuring device for urban and rural planning drawings, including a distance measuring ruler, and also including:

[0005] The bracket has two;

[0006] A positioning rod, the two ends of which are respectively arranged on the upper ends of the two brackets;

[0007] The measuring assembly has two groups, and the measuring assembly is slidably arranged on the positioning rod, and the measuring assembly includes:

[0008] A slider, slidably disposed on the positioning rod;

[0009] A slide rail, which has a "C"-shaped cross section and a front opening, and is arranged on one side of the slider;

[0010] An indicator rod, arranged on one side of the slide rail and located beside the front opening;

[0011] A measuring rod is slidably arranged on the slide rail, the measuring rod is perpendicular to the positioning rod, the outer side of the measuring rod is parallel to the axis direction and has a length scale line, and the indicating rod is located on the outer side of the measuring rod and opposite to the length scale line;

[0012] Wherein, one end of the distance measuring ruler is arranged on one of the sliders, and the other end is arranged on the other slider, and is used to measure the distance between the two measuring rods.

[0013] To further optimize the technical solution, the measuring ruler is a tape measure, the tape measure has a ruler housing, a ruler strip and a ruler hook, the slider has a threaded column, and the threaded column is located at the upper end of the slider: the measuring assembly also includes:

[0014] A fastening nut is threadedly connected to the threaded column, and the fastening nut is used to abut against the ruler housing or the ruler hook.

[0015] To further optimize the technical solution, the measuring component further includes:

[0016] A locking bolt is threadedly connected to the slider, and an end of the locking bolt is used to abut against the positioning rod.

[0017] To further optimize the technical solution, the middle of the length scale line is a zero scale; the bracket includes a lower rod and an upper tube, the upper tube is slidably arranged on the lower rod, and the positioning rod is arranged at the upper end of the upper tube; the bracket also includes:

[0018] A positioning bolt is threadably connected to the upper tube, and one end of the positioning bolt is used to abut against the lower rod.

[0019] To further optimize the technical solution, the positioning rod includes:

[0020] The fixed rod body has two fixed rod bodies, which are arranged opposite to each other, and the ends of the fixed rod bodies have connecting parts and plug-in parts, the connecting parts and the plug-in parts are respectively located on both sides of the fixed rod body, and the plug-in parts are plug-in-arranged with the upper tube;

[0021] The adjusting rod body is located between the two fixed rod bodies and is used to connect the two fixed rod bodies. The adjusting rod body has a main rod body portion and two docking portions, which are respectively located on both sides of the main rod body portion. The docking portions are used to be detachably connected to the connecting portion. The adjusting rod body and the fixed rod body are coaxially arranged and have the same diameter.

[0022] To further optimize the technical solution, the connecting portion is a connecting stud, the docking portion is a connecting screw, the connecting screw is rotatably connected to the main rod body, and the connecting screw is threadedly connected to the connecting stud.

[0023] To further optimize the technical solution, after the connecting spiral tube is threadedly connected to the connecting stud, the end of the connecting stud abuts against the end of the main rod body.

[0024] To further optimize the technical solution, the slider is slidably and rotatably arranged on the positioning rod, and the fixed rod body and / or the adjusting rod body have angle scale lines on their circumferences; one side of the slider has a pointer, and the pointer points to the angle scale lines.

[0025] To further optimize the technical solution, the bracket also includes a base, and the lower rod is rotatably connected to the base.

[0026] Further optimization of this technical solution also includes:

[0027] A slip ring is slidably arranged on the measuring rod, and the slip ring is in a rhombus shape.

[0028] The beneficial effects of the utility model are:

[0029] 1. The positioning rod can be placed above the plane drawing or sand table. The measuring component can measure the length of the plane drawing and the points on the sand table, and measure the height or depth of the buildings or terrain on the sand table. Both the plane drawing and the sand table are universal, easy to use, and can be adapted to the measurement of plane drawings and sand tables of larger areas. The measuring rod can be slid up and down to measure the height or depth. Two measuring components are set, and the horizontal length distance between the two measuring rods can be calibrated and measured by the distance ruler.

[0030] 2. The cross-section of the slide rail is "C"-shaped, with a front opening on the front side to expose the scale of the measuring rod. The slide rail can be set longer, which has a better guiding effect on the measuring rod. At the same time, the indicator rod is set close to the length scale line, and the thickness of the indicator rod can be smaller, which is convenient for reading. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the front side perspective;

[0032] Figure 2 for Figure 1 The schematic diagram of the local enlarged structure at position I in the middle;

[0033] Figure 3 This is a schematic diagram of the structure of the utility model from a rear side perspective;

[0034] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at II in the middle;

[0035] Figure 5 for Figure 3 A schematic diagram of the partially enlarged structure at position III in the middle;

[0036] Figure 6 This is a front structural schematic diagram of the utility model;

[0037] Figure 7This is a schematic diagram of the cross-sectional structure of the bracket and the positioning rod of the utility model;

[0038] Figure 8 for Figure 7 A schematic diagram of the local enlarged structure at IV in the middle;

[0039] Fig. 9 This is a schematic diagram of the structure of the utility model for measuring the tilt angle state;

[0040] Explanation of markings in the figure: 1. Distance ruler; 101. Ruler housing; 102. Ruler strip; 103. Ruler hook; 2. Bracket; 201. Lower rod; 202. Upper tube; 203. Positioning bolt; 204. Base; 3. Positioning rod; 301. Fixed rod body; 3011. Connecting part; 3012. Inserting part; 302. Adjusting rod body; 3021. Main rod body; 3022. Docking part; 303. Angle scale line; 4. Measuring assembly; 401. Sliding block; 4011. Threaded column; 402. Sliding rail; 4021. Front opening; 403. Indicating rod; 404. Measuring rod; 4041. Length scale line; 4042. Zero scale; 405. Fastening nut; 406. Locking bolt; 407. Pointer; 408. Marking line; 5. Slip ring. DETAILED DESCRIPTION

[0041] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0043] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] like Figure 1-9As shown, the measuring device for urban and rural planning drawings includes a distance ruler 1, and also includes: a bracket 2, which has two; a positioning rod 3, the two ends of the positioning rod 3 are respectively arranged at the upper ends of the two brackets 2; a measuring component 4, which has two groups, and the measuring component 4 is slidably arranged on the positioning rod 3, and the measuring component 4 includes: a slider 401, which is slidably arranged on the positioning rod 3; a slide rail 402, which has a "C"-shaped cross-section and has a front opening 4021, and the slide rail 402 is arranged on one side of the slider 401; an indicating rod 403, which is arranged on one side of the slide rail 402 and is located next to the front opening 4021; a measuring rod 404, which is slidably arranged on the slide rail 402, the measuring rod 404 is perpendicular to the positioning rod 3, and the outer side of the measuring rod 404 is parallel to the axial direction and has a length scale line 4041, and the indicating rod 403 is located on the outer side of the measuring rod 404 and opposite to the length scale line 4041; wherein one end of the distance ruler 1 is arranged on one slider 401, and the other end is arranged on the other slider 401, for measuring the distance between the two measuring rods 404. The measuring tape 1 is a measuring tape having a ruler housing 101, a ruler strip 102 and a ruler hook 103. The slider 401 has a threaded column 4011, and the threaded column 4011 is located at the upper end of the slider 401. The measuring component 4 also includes a fastening nut 405, which is threadedly connected to the threaded column 4011, and the fastening nut 405 is used to abut the ruler housing 101 or the ruler hook 103.

[0046] When in use, the bracket 2 supports the positioning rod 3, and the positioning rod 3 is parallel to the plane drawing or the top of the sand table. When the horizontal distance between two points needs to be measured, the positioning rod 3 is parallel to the two positioning lines, and then the two sliders 401 are horizontally slid, and the sliders 401 drive the measuring rod 404 to move to the point to be measured. After the two measuring rods 404 are aligned with the two points, the distance ruler 1 measures the distance between the two measuring rods 404 to read the horizontal distance between the two points. When the height of the building on the sand table needs to be measured, a measuring rod 404 is moved from the reference plane to the upper end of the building. According to the reading of the length scale line 4041 of the reference plane and the reading of the degree scale line of the upper end of the building, the height can be measured, and the same is true for measuring the depth.

[0047] When in use, the existing line segments or models can be measured on the finished plane drawings and sand tables, and the numerical calibration can also be performed during the production process, for example, the relative positions of two points can be calibrated according to the length distance. At this time, the measuring rod 404 is suspended above the drawing or sand table. Although the lower end of the measuring rod 404 is close to the plane drawing or the surface of the sand table, compared with the existing conventional measuring equipment that is completely in line with the outline of the drawing and occupies a large area, the measuring rod 404 is suspended above, and the area occupied by the drawing is smaller, which greatly reduces the impact on multi-directional operations and observations during drawing. It is easier to use when drawing or making a sand table, and is not easy to damage existing lines or models.

[0048] The indicator rod 403 is opposite to the degree scale line, which is convenient for reading. The two ends of the distance ruler 1 are respectively set on the two sliders 401, and the distance ruler 1 can detect the distance between the measuring rods 404, so as to directly read the distance between the measuring rods 404. The distance ruler 1 can be a laser distance measuring device, and a reflector is set as a matching of the laser distance measuring device. The reflector is set on one slider 401 and is directly opposite to the axis of the measuring rod 404 on the slider 401. The laser distance measuring device is set on the other slider 401, and the measuring end is directly opposite to the other measuring rod 404. When the two sliders 401 slide relatively close or away, the laser distance measuring device can measure the distance value.

[0049] The measuring ruler 1 can also be a tape measure, which has a simple structure and low cost. The ruler strip 102 of the measuring tape is elastically rolled up in the ruler housing 101, and the ruler hook 103 is the zero position end of the ruler strip 102. In one measuring component 4, the ruler hook 103 can be fixed on a slider 401 by a fastening bolt and directly opposite to the axis position of the measuring rod 404. In another measuring component 4, the ruler housing 101 is fixed on the slider 401 by a fastening bolt, and the scale of the ruler strip 102 can be directly opposite to the axis position of the measuring rod 404 on the slider 401. When the two sliders 401 are far away, the ruler housing 101 automatically releases the ruler strip 102. When the two sliders 401 are close, the ruler housing 101 automatically retracts the ruler strip 102, and the distance between the two measuring rods 404 can be easily read. The measuring ruler 1 is locked by fastening bolts, which is convenient for replacement and disassembly, and easy to use.

[0050] The upper end of the slider 401 may have a marking line 408 directly opposite to the axis of the measuring rod 404 to facilitate alignment.

[0051] Furthermore, the measuring assembly 4 further includes: a locking bolt 406 , which is threadedly connected to the slider 401 , and an end of the locking bolt 406 is used to abut against the positioning rod 3 .

[0052] When in use, the setting of the locking bolt 406 facilitates the positioning of the slider 401, so that the corresponding position of the measuring rod 404 can remain unchanged or the distance between the two measuring rods 404 remains unchanged, which is more convenient to use whether for drawing or measuring.

[0053] Furthermore, the middle of the length scale line 4041 is a zero scale 4042; the bracket 2 includes a lower rod 201 and an upper tube 202, the upper tube 202 is slidably set on the lower rod 201, and the positioning rod 3 is set at the upper end of the upper tube 202; the bracket 2 also includes: a positioning bolt 203, which is threadedly connected to the upper tube 202, and one end is used to abut against the lower rod 201.

[0054] When using, Figure 2As shown, the middle of the length scale line 4041 of the measuring rod 404 is a zero scale 4042, and scale lines are set relatively on the upper and lower sides, and the corresponding values ​​of the scale lines gradually increase from the middle to the two ends, which is convenient for measuring height and depth. When used for testing, relying on the telescopic structure of the bracket 2, the positioning bolt 203 can lock and position the telescopic structure, and the positioning rod 3 adjusts the height position so that when the zero scale 4042 is relative to the position of the test rod, the lower end of the measuring rod 404 is at the same height as the reference plane (the reference plane is artificially defined, for example, when measuring the altitude, it is relative to a certain altitude zero point, and the two points at the altitude are the reference plane). When measuring the height relative to the reference plane, the measuring rod 404 moves upward, and the lower length scale line 4041 is relative to the indicator rod 403. The length scale line 4041 at the lower part of the measuring rod 404 corresponding to the indicator rod 403 is the height. There is no need to do addition and subtraction calculations of most values, which makes measurement more convenient and the reference is unified. Similarly, when measuring the depth relative to the reference plane, the measuring rod 404 moves downward, and the upper length scale line 4041 is relative to the indicator rod 403, and the read value is the depth.

[0055] Further, the positioning rod 3 includes: a fixed rod body 301, which has two fixed rod bodies 301, and the two fixed rod bodies 301 are arranged opposite to each other. The ends of the fixed rod bodies 301 have a connecting portion 3011 and an inserting portion 3012, and the connecting portion 3011 and the inserting portion 3012 are respectively located on both sides of the fixed rod body 301, and the inserting portion 3012 is inserted into the upper tube 202; an adjusting rod body 302, which is located between the two fixed rod bodies 301 and is used to connect the two fixed rod bodies 301. The adjusting rod body 302 has a main rod body portion 3021 and two docking portions 3022, and the two docking portions 3022 are respectively located on both sides of the main rod body portion 3021, and the docking portions 3022 are used to be detachably connected to the connecting portion 3011. The adjusting rod body 302 and the fixed rod body 301 are coaxially arranged and have the same diameter.

[0056] When in use, the positioning rod 3 includes two fixed rod bodies 301 and an adjusting rod body 302, which is convenient for adjusting the overall length of the positioning rod 3 to better meet the measurement requirements of different spans. When the plane map or sand table is large, the longer adjusting rod body 302 can be replaced to increase the overall length of the positioning rod 3. Multiple adjusting rod bodies 302 can be prepared, and they have different lengths. The adjusting rod body 302 and the fixed rod body 301 are coaxially arranged and have the same diameter, which facilitates the more stable sliding of the slider 401 on the fixed rod body 301 and the adjusting rod body 302. The detachable connection between the connecting portion 3011 and the docking portion 3022 can be achieved by threaded connection, pin connection, plug connection, magnetic connection or snap connection, etc.

[0057] Further, the connecting portion 3011 is a connecting stud, and the docking portion 3022 is a connecting screw, which is rotatably connected to the main rod body 3021, and the connecting screw is threadedly connected to the connecting stud. After the connecting screw is threadedly connected to the connecting stud, the end of the connecting stud abuts against the end of the main rod body 3021.

[0058] When using, Figure 7 As shown, the connection screw and the connection stud are threadedly connected, which makes the connection more stable, and can still better maintain the coaxiality of the fixed rod body 301 and the adjustment rod body 302 after multiple replacements, reducing looseness. The length of the main rod body 3021 determines the length of the adjustment rod body 302.

[0059] The end cross-section of the main rod body 3021 can be a "T"-shaped structure, which is convenient for rotating the connecting screw. When the connecting screw is threadedly connected to the connecting stud, the end of the connecting stud abuts against the end of the main rod body 3021, which can improve the connection stability and reduce the looseness of the threaded connection, which is beneficial to maintaining the coaxiality of the fixed rod body 301 and the adjustable rod body 302.

[0060] Furthermore, the slider 401 is slidably and rotatably arranged on the positioning rod 3 , and the fixed rod body 301 and / or the adjusting rod body 302 have angle scale lines 303 around them; one side of the slider 401 has a pointer 407 , and the pointer 407 points to the angle scale line 303 .

[0061] When in use, the slider 401 slides parallel to the axis direction of the positioning rod 3 and rotates around the positioning rod 3. When the slider 401 rotates, the measuring rod 404 rotates accordingly. At this time, it can be used to measure the angle in the three-dimensional space, such as a slope position with a large slope. The slider 401 is rotated and the measuring rod 404 is parallel to the slope surface. The inclination angle of the measuring rod 404 is the angle of the slope. The value can be read with the help of the angle scale 303 on the side of the fixed rod body 301 or the adjustable rod body 302 (directly read the angle with the horizontal plane or measure the angle through numerical calculation). The angle scale 303 can be set to surround 360°, or only set a 180° measurement range in the upper semicircle of the positioning rod 3. The zero position of the angle scale 303 can be in the horizontal direction or in the vertical direction. A pointer 407 is set on the slider 401 for easy reading.

[0062] Furthermore, the bracket 2 also includes a base 204 , and the lower rod 201 is rotatably connected to the base 204 .

[0063] When in use, the bracket 2 also includes a base 204, which can be narrow in width but long in length, and the support is more stable. The lower rod 201 is rotatably connected to the base 204, which is convenient for placing the measuring component 4 flat, that is, the base 204 is set parallel to the positioning rod 3, and then the measuring component 4 is laid flat, which is more convenient for storage and transportation, and the measuring component 4 can be laid flat on a flat drawing for distance measurement, and the usage forms are more diverse.

[0064] Furthermore, it also includes: a slip ring 5, which is slidably arranged on the measuring rod 404, and the slip ring 5 is rhombus-shaped.

[0065] When in use, a slip ring 5 is provided on the measuring rod 404. After the measuring rod 404 is fixed, the slip ring 5 can be used to measure the height position, which is more convenient for measuring different height positions. The slip ring 5 is diamond-shaped and has a pointed end, which is convenient for pointing to different points.

[0066] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A measuring device for urban and rural planning maps, comprising a distance measuring ruler (1), characterized in that: Also includes: The bracket (2) has two; A positioning rod (3), wherein two ends of the positioning rod (3) are respectively arranged on the upper ends of the two brackets (2); The measuring assembly (4) has two groups. The measuring assembly (4) is slidably arranged on the positioning rod (3). The measuring assembly (4) comprises: A slider (401) is slidably disposed on the positioning rod (3); A slide rail (402) having a "C"-shaped cross section and a front opening (4021), wherein the slide rail (402) is arranged on one side of the slider (401); An indicator rod (403) is arranged on one side of the slide rail (402) and is located beside the front opening (4021); A measuring rod (404) is slidably arranged on the slide rail (402), the measuring rod (404) is perpendicular to the positioning rod (3), the outer side of the measuring rod (404) is parallel to the axis direction and has a length scale line (4041), and the indicating rod (403) is located on the outer side of the measuring rod (404) and opposite to the length scale line (4041); One end of the distance measuring ruler (1) is arranged on one of the sliders (401), and the other end is arranged on the other slider (401), and is used to measure the distance between the two measuring rods (404).

2. The measuring device for urban and rural planning maps according to claim 1, characterized in that: The measuring tape (1) is a measuring tape, comprising a tape housing (101), a tape strip (102) and a tape hook (103); the slider (401) comprises a threaded column (4011), and the threaded column (4011) is located at the upper end of the slider (401); the measuring assembly (4) further comprises: A fastening nut (405), wherein the fastening nut (405) is threadedly connected to the threaded column (4011), and the fastening nut (405) is used to abut against the ruler housing (101) or the ruler hook (103).

3. The measuring device for urban and rural planning maps according to claim 1, characterized in that: The measuring component (4) further comprises: A locking bolt (406), wherein the locking bolt (406) is threadedly connected to the slider (401), and an end of the locking bolt (406) is used to abut against the positioning rod (3).

4. The measuring device for urban and rural planning maps according to claim 1, characterized in that: The middle of the length scale line (4041) is a zero scale (4042); the bracket (2) comprises a lower rod (201) and an upper tube (202), the upper tube (202) is slidably arranged on the lower rod (201), and the positioning rod (3) is arranged at the upper end of the upper tube (202); the bracket (2) also comprises: A positioning bolt (203) is threadedly connected to the upper tube (202), and one end of the positioning bolt is used to abut against the lower rod (201).

5. The measuring device for urban and rural planning maps according to claim 4, characterized in that: The positioning rod (3) comprises: The fixed rod body (301) comprises two fixed rod bodies (301) which are arranged opposite to each other, and the ends of the fixed rod bodies (301) comprise connecting parts (3011) and plug-in parts (3012), the connecting parts (3011) and the plug-in parts (3012) are respectively located on two sides of the fixed rod body (301), and the plug-in parts (3012) are plug-in-arranged with the upper tube (202); The adjusting rod body (302) is located between the two fixed rod bodies (301) and is used to connect the two fixed rod bodies (301). The adjusting rod body (302) comprises a main rod body portion (3021) and two docking portions (3022). The two docking portions (3022) are respectively located on both sides of the main rod body portion (3021). The docking portions (3022) are used to be detachably connected to the connecting portion (3011). The adjusting rod body (302) and the fixed rod body (301) are coaxially arranged and have the same diameter.

6. The measuring device for urban and rural planning maps according to claim 5, characterized in that: The connecting portion (3011) is a connecting stud, and the docking portion (3022) is a connecting screw tube. The connecting screw tube is rotationally connected to the main rod body (3021), and the connecting screw tube is threadedly connected to the connecting stud.

7. The measuring device for urban and rural planning maps according to claim 6, characterized in that: After the connecting spiral tube is threadedly connected to the connecting stud, the end of the connecting stud abuts against the end of the main rod body (3021).

8. The measuring device for urban and rural planning maps according to claim 5, characterized in that: The slider (401) is slidably and rotatably arranged on the positioning rod (3); the fixed rod body (301) and / or the adjusting rod body (302) have angle scale lines (303) on their circumferences; one side of the slider (401) has a pointer (407), and the pointer (407) points to the angle scale lines (303).

9. The measuring device for urban and rural planning maps according to claim 4, characterized in that: The bracket (2) further comprises a base (204), and the lower rod (201) is rotatably connected to the base (204).

10. The measuring device for urban and rural planning maps according to claim 1, characterized in that: Also includes: A slip ring (5) is slidably arranged on the measuring rod (404), and the slip ring (5) is rhombus-shaped.

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