CN219198769U - Adjustable surveying instrument with fixed function - Google Patents

Adjustable surveying instrument with fixed function Download PDF

Info

Publication number
CN219198769U
CN219198769U CN202223198919.5U CN202223198919U CN219198769U CN 219198769 U CN219198769 U CN 219198769U CN 202223198919 U CN202223198919 U CN 202223198919U CN 219198769 U CN219198769 U CN 219198769U
Authority
CN
China
Prior art keywords
bolt
hydraulic cylinder
hydraulic
surveying instrument
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202223198919.5U
Other languages
Chinese (zh)
Inventor
周杰
周挺忠
桂礼奎
杨乾坤
谢宸洲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Zhenghui Surveying And Mapping Co ltd
Original Assignee
Hangzhou Zhenghui Surveying And Mapping Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangzhou Zhenghui Surveying And Mapping Co ltd filed Critical Hangzhou Zhenghui Surveying And Mapping Co ltd
Priority to CN202223198919.5U priority Critical patent/CN219198769U/en
Application granted granted Critical
Publication of CN219198769U publication Critical patent/CN219198769U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30Assessment of water resources

Landscapes

  • Details Of Measuring And Other Instruments (AREA)

Abstract

The utility model discloses an adjustable surveying instrument with a fixing function, which comprises a base, a first hydraulic cylinder, a first bolt, a third hydraulic cylinder, a magnetic attraction type fitting and a conical fitting, wherein the first hydraulic cylinder is arranged in the center of the base, a second bolt is arranged in the second bolt hole, a wheel group type fitting is arranged at the bottom of a bottom plate, and the magnetic attraction type fitting and the conical fitting are replaceable parts of the wheel group type fitting. The adjustable surveying instrument with the fixing function is provided with a set of adjusting device and a set of replaceable chassis accessory: the user can be through the mutual cooperation between first pneumatic cylinder, second pneumatic cylinder and the third pneumatic cylinder and through rotatory hand wheel that links directly with first bolt for the position, angle, the orientation of the surveying instrument body of third hydraulic stem one end for the base change, thereby make the surveying instrument body can utilize the transmission in the equipment to adapt to the survey and drawing work under various complicated conditions, and is very efficient.

Description

Adjustable surveying instrument with fixed function
Technical Field
The utility model relates to the technical field of mapping instruments, in particular to an adjustable mapping instrument with a fixing function.
Background
The adjustable surveying instrument with the fixing function is a surveying instrument auxiliary device which can adjust and fix the operation according to the site condition. The distance meter is a tool for measuring the length or the distance, and can be combined with angle measuring equipment or a module to measure parameters such as angle, area and the like. The range finder has many forms, is usually an elongated cylinder, and consists of an objective lens, an eyepiece, a display device (which can be built in), a battery and the like. Many environments that need range finding are outdoor, and range finding environment is often very complicated, however most of the plotters on the market do not have self regulatory function for it can't adapt to the operation under the complex environment, and many plotters do not possess fixed function simultaneously, make these plotters can't work under some places that need fix just can survey and draw the operation, and is very inefficient.
Such as a range finder as proposed in patent number CN 201811044705.8. This surveying instrument does not have self regulatory function for it can't adapt to the operation under the complex environment, and this distancer does not possess fixed function simultaneously, makes it unable work under some places that need fix just can carry out the survey operation, and is very low-efficient, so we propose an regulation formula surveying instrument with fixed function, in order to solve the problem that above-mentioned in put forward.
Disclosure of Invention
The utility model aims to provide an adjustable surveying instrument with a fixing function, which solves the problems that most of the surveying instruments on the market provided by the background technology have no self-adjusting function, so that the surveying instruments cannot adapt to operation in complex environments, and meanwhile, many distance measuring instruments have no fixing function, so that the distance measuring instruments cannot work in places where the surveying operation needs to be fixed, and are quite low in efficiency.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an regulation formula surveying instrument with fixed function, includes base, first pneumatic cylinder, first bolt, third pneumatic cylinder, magnetism inhale type accessory and toper accessory, central authorities install first pneumatic cylinder on the base, and install the second pneumatic cylinder in first pneumatic cylinder one side, set up the second hydraulic stem in the second pneumatic cylinder, set up first hydraulic stem in the first pneumatic cylinder, and install the regulating plate at first hydraulic stem top, set up first bolt hole in the regulating plate, and set up first bolt in first bolt hole, third pneumatic cylinder is installed to first bolt one end, and set up the third hydraulic stem in the third pneumatic cylinder, surveying instrument body is installed to third hydraulic stem one end, and installs the protective housing under the surveying instrument body, the base below sets up the bottom plate, and sets up the second bolt hole in the bottom plate, set up the second bolt in the bottom plate bottom installation wheelset type accessory, magnetism inhale type accessory and toper accessory be the replaceable parts of wheelset type accessory.
Preferably, the second hydraulic rod forms a sliding structure in the second hydraulic cylinder, and the base, the first hydraulic cylinder and the second hydraulic rod assembly form a hinge structure with each other, when a user uses the surveying instrument, the equipment can be placed in a working area, then the second hydraulic cylinder is started, the second hydraulic rod in the second hydraulic cylinder is driven to start stretching or shortening, and as the base, the first hydraulic cylinder and the second hydraulic rod assembly form the hinge structure with each other, the second hydraulic rod starts stretching or shortening, a certain angle can be adjusted for the first hydraulic cylinder relative to the base, so that the user can conveniently use the angle to perform operation in a field environment.
Preferably, the first hydraulic rod forms a sliding structure in the first hydraulic cylinder, after the user places the equipment in the working area, the first hydraulic cylinder can be started, so that the first hydraulic rod stretches or shortens under the driving of the first hydraulic cylinder, the surveying instrument body arranged above the first hydraulic rod can ascend or descend, and the user can use the surveying instrument under different heights conveniently.
Preferably, the first bolt forms sliding construction in first bolt hole, after the user has confirmed the use height of surveying instrument, the user can rotate the hand wheel with first bolt is direct-connected by a small margin, the hand wheel drives first bolt and follows the screw hole rotatory advancing of first bolt hole to make the surveying instrument body of first bolt one end form certain angle for the regulating plate, this has made things convenient for the user to carry out further little angle adjustment to the surveying instrument after fixing the position and the height of this set of surveying instrument, thereby can adapt to the operation under some complicated conditions.
Preferably, the third hydraulic rod forms a sliding structure in the third hydraulic cylinder, after the user finishes the angle adjustment of the first bolt one end of the surveying instrument body relative to the adjusting plate, the user can start the third hydraulic cylinder under the condition that needs, the third hydraulic rod in the third hydraulic cylinder can be stretched or shortened in the third hydraulic cylinder, so that the distance of the surveying instrument body on one side of the third hydraulic rod relative to the adjusting plate is changed to a certain extent, the operation of the user under some complex conditions is further facilitated, meanwhile, after the surveying operation is finished, the user can adjust the third hydraulic cylinder to be in an initial state, the angle of the surveying instrument body relative to the adjusting plate is adjusted to ninety degrees, then the first hydraulic rod is started to be shortened slowly, the surveying instrument body can fall into a protective shell below slowly, the surveying instrument body is convenient to store and is protected, and the surveying instrument body is quite safe.
Preferably, the second bolt forms a sliding structure in the second bolt hole, when a user needs to install the wheel assembly type fitting at the bottom of the device, the wheel assembly type fitting can be placed in the groove at the bottom of the bottom plate, then the second bolt is rotated along the pointer, the second bolt is rotated and advanced along the thread in the second bolt hole, and finally the second bolt and the wheel assembly type fitting are contacted with each other, so that the bottom plate can complete the fixing operation of the wheel assembly type fitting.
Preferably, the wheel set type accessory, the magnetic type accessory and the conical accessory can be replaced with each other, and a user can replace the wheel set type accessory with the magnetic type accessory or the conical accessory according to the actual situation, so that the surveying instrument can be adsorbed and fixed on some metal objects through the magnetic type accessory and can be firmly fixed on the soft ground through the conical accessory, and the whole replacing device is convenient in structure and convenient to operate.
Compared with the prior art, the utility model has the beneficial effects that: the adjustable surveying instrument with the fixing function is provided with a set of adjusting device and a set of replaceable chassis accessory:
1. the user can change the position, the angle and the orientation of the surveying instrument body at one end of the third hydraulic rod relative to the base through the mutual coordination among the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder and through the hand wheel which is directly connected with the first bolt, so that the surveying instrument body can adapt to surveying and mapping work under various complex conditions by utilizing a transmission device in the equipment, and the surveying instrument is very efficient;
2. the user can be according to actual conditions's needs with the wheelset type accessory replace for magnetism inhale type accessory or toper accessory for this set of surveying instrument not only can inhale the type accessory through magnetism and adsorb and fix on some metal article, can also firmly fix on some soft subaerial of soil property through the toper accessory, whole set of replacement device simple structure, convenient operation.
Drawings
FIG. 1 is a schematic diagram of the front structure of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
FIG. 3 is a schematic view of the structure of the base plate of the present utility model;
FIG. 4 is a schematic view of a wheel assembly according to the present utility model;
FIG. 5 is a schematic view of a magnetic attachment according to the present utility model;
fig. 6 is a schematic view of the conical fitting structure of the present utility model.
In the figure: 1. a base; 2. a first hydraulic cylinder; 3. a second hydraulic cylinder; 4. a second hydraulic lever; 5. a first hydraulic lever; 6. an adjustment plate; 7. a first bolt hole; 8. a first bolt; 9. a third hydraulic cylinder; 10. a third hydraulic lever; 11. a mapper body; 12. a protective shell; 13. a bottom plate; 14. a second bolt hole; 15. a second bolt; 16. a wheel set fitting; 17. a magnetic attachment; 18. a conical fitting.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides a technical solution: the utility model provides an adjustable surveying instrument with fixed function, including base 1, first pneumatic cylinder 2, second pneumatic cylinder 3, second pneumatic cylinder 4, first pneumatic cylinder 5, adjusting plate 6, first bolt hole 7, first bolt 8, third pneumatic cylinder 9, third pneumatic cylinder 10, the surveying instrument body 11, the protective housing 12, bottom plate 13, second bolt hole 14, second bolt 15, wheelset type accessory 16, magnetic type accessory 17 and conical accessory 18, install first pneumatic cylinder 2 on the center on base 1, and install second pneumatic cylinder 3 in first pneumatic cylinder 2 one side, set up second pneumatic cylinder 4 in the second pneumatic cylinder 3, second pneumatic cylinder 4 constitutes sliding structure in second pneumatic cylinder 3, and base 1, first pneumatic cylinder 2 and second pneumatic cylinder subassembly each other constitute hinge structure, when this surveying instrument of use, can place equipment in the work area earlier, then start second pneumatic cylinder 3, second pneumatic cylinder 4 in the second pneumatic cylinder 3 receives the drive and begins stretching or shorten, because base 1, first pneumatic cylinder 2 and second pneumatic cylinder subassembly make the angle can be adjusted to the first pneumatic cylinder 2 and make the first pneumatic cylinder 2 and the pivot structure that the second pneumatic cylinder is used for the first hydraulic cylinder is convenient for the first and the second pneumatic cylinder is the certain angle of the side.
Set up first hydraulic stem 5 in first pneumatic cylinder 2, and install adjusting plate 6 at first hydraulic stem 5 top, first hydraulic stem 5 constitutes sliding construction in first pneumatic cylinder 2, after the user places equipment in the work area, can start first pneumatic cylinder 2 for first hydraulic stem 5 stretches or shortens under the drive of first pneumatic cylinder 2, makes the surveying instrument body 11 of installing in first hydraulic stem 5 top can rise or descend, and this set of surveying instrument that can use under the not co-altitude of this convenience of customers.
The first bolt hole 7 is formed in the adjusting plate 6, the first bolt 8 is arranged in the first bolt hole 7, the first bolt 8 forms a sliding structure in the first bolt hole 7, after the user determines the using height of the surveying instrument, the user can rotate a hand wheel directly connected with the first bolt 8 in a small amplitude, the hand wheel drives the first bolt 8 to rotate and advance along the threaded hole of the first bolt hole 7, so that the surveying instrument body 11 at one end of the first bolt 8 forms a certain angle relative to the adjusting plate 6, and the user can conveniently carry out further small-angle adjustment on the surveying instrument after fixing the position and the height of the surveying instrument, thereby being suitable for operation under some complex conditions.
The third hydraulic cylinder 9 is installed at one end of the first bolt 8, the third hydraulic rod 10 is arranged in the third hydraulic cylinder 9, the mapper body 11 is installed at one end of the third hydraulic rod 10, the protective shell 12 is installed right below the mapper body 11, the third hydraulic rod 10 forms a sliding structure in the third hydraulic cylinder 9, after the angle adjustment of the mapper body 11 at one end of the first bolt 8 relative to the adjusting plate 6 is finished by a user, the third hydraulic cylinder 9 can be started by the user under the condition that the first hydraulic rod 5 is required, the third hydraulic rod 10 in the third hydraulic cylinder 9 can be stretched or shortened in the third hydraulic cylinder, so that the distance of the mapper body 11 at one side of the third hydraulic rod 10 relative to the adjusting plate 6 is changed to a certain extent, the operation of the user under some complex conditions is further facilitated, meanwhile, after the mapping operation is finished, the third hydraulic cylinder 9 is adjusted to be in an initial state by the user, the angle adjustment of the mapper body 11 relative to the adjusting plate 6 is ten degrees, then the first hydraulic rod 5 is started to enable the mapping body to be slowly shortened, the mapper body 11 can fall into the protective shell 12 under the condition, and the mapping operation is not only convenient, but also the mapping operation is not provided.
The base 1 below sets up bottom plate 13, and set up second bolt hole 14 in bottom plate 13, set up second bolt 15 in the second bolt hole 14, second bolt 15 constitutes sliding construction in second bolt hole 14, when the user need install wheelset type accessory 16 in the bottom of device, can place wheelset type accessory 16 in the recess of bottom plate 13 bottom, then rotate second bolt 15 along the pointer, second bolt 15 is rotatory to advance along the screw thread in the second bolt hole 14, finally with wheelset type accessory 16 mutual contact, thereby make bottom plate 13 accomplish the fixed operation to wheelset type accessory 16.
The wheel set type fitting 16 is arranged at the bottom of the bottom plate 13, the magnetic type fitting 17 and the conical fitting 18 are replaceable parts of the wheel set type fitting 16, the magnetic type fitting 17 and the conical fitting 18 can be mutually replaced, a user can replace the wheel set type fitting 16 with the magnetic type fitting 17 or the conical fitting 18 according to actual conditions, and the mapping instrument can be adsorbed and fixed on some metal objects through the magnetic type fitting 17 and can be firmly fixed on some soft soil ground through the conical fitting 18.
Working principle: when the adjustable surveying instrument with the fixed function is used, preferably, the second hydraulic rod 4 forms a sliding structure in the second hydraulic cylinder 3, the base 1, the first hydraulic cylinder 2 and the second hydraulic rod component form a hinge structure, when a user uses the adjustable surveying instrument, the equipment can be placed in a working area, then the second hydraulic cylinder 3 is started, the second hydraulic rod 4 in the second hydraulic cylinder 3 is driven to start stretching or shortening, and as the base 1, the first hydraulic cylinder 2 and the second hydraulic rod component form the hinge structure, the second hydraulic rod 4 starts stretching or shortening, a certain angle can be adjusted relative to the base 1, and the user can work in a field environment by utilizing the angle conveniently. When the user places the device in the working area, the first hydraulic cylinder 2 can be started, so that the first hydraulic rod 5 stretches or shortens under the driving of the first hydraulic cylinder 2, and the surveying instrument body 11 arranged above the first hydraulic rod 5 can ascend or descend, which is convenient for the user to use the surveying instrument set at different heights. After the user has confirmed the use height of surveying instrument, the user can rotate by a small margin and the hand wheel that first bolt 8 directly links, and the hand wheel drives first bolt 8 and rotate along the screw hole of first bolt hole 7 and advance to the surveying instrument body 11 that makes first bolt 8 one end forms certain angle for adjusting plate 6, this has made things convenient for the user to carry out further small angle adjustment to the surveying instrument after fixing the position and the height of this set of surveying instrument, thereby can adapt to the operation under some complicated conditions. When the user finishes the angle adjustment of the first end of the first bolt 8 relative to the adjusting plate 6, the user can start the third hydraulic cylinder 9 under the condition that needs, and the third hydraulic rod 10 in the third hydraulic cylinder 9 can be stretched or shortened in the third hydraulic cylinder, so that the distance between the first end of the first bolt 8 and the adjusting plate 6 of the first end of the first hydraulic rod 11 is changed to a certain extent, the operation of the user under some complex conditions is further facilitated, meanwhile, after the mapping operation is finished, the user can adjust the third hydraulic cylinder 9 to an initial state, adjust the angle of the first end of the first hydraulic rod 11 relative to the adjusting plate 6 to ninety degrees, then start the first hydraulic rod 5 to slowly shorten the first end of the first hydraulic rod, the first end of the first hydraulic rod 11 slowly falls into the protective shell 12 below, the storage operation is facilitated, the protection effect is provided for the first end of the first hydraulic rod 11, and the first hydraulic rod 11 is very safe. When a user needs to install the wheel assembly 16 at the bottom of the device, the wheel assembly 16 can be placed in the groove at the bottom of the bottom plate 13, then the second bolt 15 is rotated along the pointer, the second bolt 15 is rotated and advanced along the thread in the second bolt hole 14, and finally the second bolt 15 and the wheel assembly 16 are contacted with each other, so that the bottom plate 13 completes the fixing operation of the wheel assembly 16. The user can replace wheelset type accessory 16 with magnetism and inhale type accessory 17 or toper accessory 18 according to actual conditions's needs for this set of mapping appearance not only can inhale the type accessory 17 through magnetism and adsorb and fix on some metal article, can also firmly fix on some soft subaerial of soil property through toper accessory 18, and whole set of replacement device simple structure, convenient operation. What is not described in detail in this specification is prior art known to those skilled in the art.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides an regulation formula surveying instrument with fixed function, includes base (1), first pneumatic cylinder (2), first bolt (8), third pneumatic cylinder (9), magnetism inhale accessory (17) and toper accessory (18), its characterized in that: the base (1) is provided with a first hydraulic cylinder (2) at the center, a second hydraulic cylinder (3) is arranged on one side of the first hydraulic cylinder (2), a second hydraulic rod (4) is arranged in the second hydraulic cylinder (3), a first hydraulic rod (5) is arranged in the first hydraulic cylinder (2), an adjusting plate (6) is arranged at the top of the first hydraulic rod (5), a first bolt hole (7) is arranged in the adjusting plate (6), a first bolt (8) is arranged in the first bolt hole (7), a third hydraulic cylinder (9) is arranged at one end of the first bolt (8), and set up third hydraulic stem (10) in third pneumatic cylinder (9), mapping appearance body (11) are installed to third hydraulic stem (10) one end, and install protective housing (12) under mapping appearance body (11), base (1) below sets up bottom plate (13), and sets up second bolt hole (14) in bottom plate (13), set up second bolt (15) in second bolt hole (14), wheel group type accessory (16) are installed to bottom plate (13) bottom, magnetic attraction type accessory (17) and conical fitting (18) are the replaceable parts of wheel group type accessory (16).
2. The adjustable mapping instrument with fixed function of claim 1, wherein: the second hydraulic rod (4) forms a sliding structure in the second hydraulic cylinder (3), and the base (1), the first hydraulic cylinder (2) and the second hydraulic rod component form a hinge structure.
3. The adjustable mapping instrument with fixed function of claim 1, wherein: the first hydraulic rod (5) forms a sliding structure in the first hydraulic cylinder (2).
4. The adjustable mapping instrument with fixed function of claim 1, wherein: the first bolt (8) forms a sliding structure in the first bolt hole (7).
5. The adjustable mapping instrument with fixed function of claim 1, wherein: the third hydraulic rod (10) forms a sliding structure in the third hydraulic cylinder (9).
6. The adjustable mapping instrument with fixed function of claim 1, wherein: the second bolt (15) forms a sliding structure in the second bolt hole (14).
7. The adjustable mapping instrument with fixed function of claim 1, wherein: the wheel set type fitting (16), the magnetic attraction type fitting (17) and the conical fitting (18) can be replaced with one another.
CN202223198919.5U 2022-12-01 2022-12-01 Adjustable surveying instrument with fixed function Active CN219198769U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223198919.5U CN219198769U (en) 2022-12-01 2022-12-01 Adjustable surveying instrument with fixed function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223198919.5U CN219198769U (en) 2022-12-01 2022-12-01 Adjustable surveying instrument with fixed function

Publications (1)

Publication Number Publication Date
CN219198769U true CN219198769U (en) 2023-06-16

Family

ID=86716773

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223198919.5U Active CN219198769U (en) 2022-12-01 2022-12-01 Adjustable surveying instrument with fixed function

Country Status (1)

Country Link
CN (1) CN219198769U (en)

Similar Documents

Publication Publication Date Title
CN214368851U (en) Surveying instrument positioner for surveying and mapping engineering
CN219198769U (en) Adjustable surveying instrument with fixed function
CN210180307U (en) Dial indicator is with measuring support
CN208567874U (en) A kind of engineering construction measuring device
CN213840121U (en) Modular engineering survey and drawing device support
CN211667434U (en) Surveying instrument with GPS function
CN219036175U (en) Detachable bracket for surveying and mapping
CN111982080A (en) Terrain measuring device for territory space planning
CN214470945U (en) Measuring device for building intelligent engineering
CN211477122U (en) Fine adjustment device of surveying instrument
CN220817209U (en) Surveying and mapping device for construction
CN2720399Y (en) Adjustable multifunctional laser-levelling steel band tape
CN221075985U (en) Decoration engineering measuring device
CN218064061U (en) Vertical mapping device of geographical survey convenient to it is fixed
CN213874430U (en) Adjustable autogiration structure of surveying instrument for land surveying and mapping
CN212340247U (en) Positioner of surveying instrument for land surveying and mapping
CN220084031U (en) Land mapping instrument
CN221300835U (en) Indoor decoration is with survey and drawing device
CN215060986U (en) Surveying instrument convenient to adjust height of survey and drawing
CN220647547U (en) Measuring marker post fixing device
CN220563250U (en) Open-air mapping equipment
CN218445972U (en) Place stable accurate distancer
CN219810455U (en) Measurer for building decoration engineering
CN221054676U (en) Surveying and mapping device
CN217980343U (en) Geological compass for field geological survey

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant