CN210487972U - Hand-held laser rangefinder calibrating installation - Google Patents
Hand-held laser rangefinder calibrating installation Download PDFInfo
- Publication number
- CN210487972U CN210487972U CN201921336954.4U CN201921336954U CN210487972U CN 210487972 U CN210487972 U CN 210487972U CN 201921336954 U CN201921336954 U CN 201921336954U CN 210487972 U CN210487972 U CN 210487972U
- Authority
- CN
- China
- Prior art keywords
- plate
- platform
- standard steel
- steel tape
- hand
- 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
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to a calibrating installation, concretely relates to hand-held type laser range finder calibrating installation. The handheld laser range finder calibrating device comprises supporting legs, a standard steel tape and a reflecting plate, wherein a length-adjustable platform consisting of one or more platforms is connected with the supporting legs through a connecting plate, the platform is provided with a slideway, and the leveling device, an alignment plate and the reflecting plate are in sliding connection with the platform through the slideway; one end of the standard steel tape is fixed through a pressing plate, the middle of the standard steel tape is flatly laid on the support shaft, and the other end of the standard steel tape is connected with a weight through a pulley. The utility model provides a calibrating installation length among the prior art fixed, dismantle loaded down with trivial details, adjust technical problem such as consuming time, provide a convenient, the quick convenient hand-held type laser range finder calibrating installation of adjustment is dismantled in the installation.
Description
Technical Field
The utility model relates to a calibrating installation, concretely relates to hand-held type laser range finder calibrating installation.
Background
The hand-held laser distance measuring instrument is a portable measuring instrument which takes laser as carrier wave, takes diffuse reflection measurement of a target surface as a characteristic and measures a short-distance in space by a pulse method, a phase method and the like, and is widely applied to the aspects of building construction measurement, crane deformation measurement, house property measurement, mapping and the like. The accuracy of the laser ranging instrument can be divided into 0 level, 1 level and 2 levels.
However, in the prior art, the calibrating device of the CN208818831 laser range finder with the authorized announcement date of 2019, 5 and 3 is fixed in length, cannot be adjusted, and is complex to disassemble and time-consuming to adjust.
Disclosure of Invention
The purpose of the invention is as follows:
the utility model provides a convenient, quick convenient hand-held type laser rangefinder calibrating installation of adjustment is dismantled in installation.
The technical scheme is as follows:
the handheld laser range finder calibrating device comprises supporting legs, a standard steel tape and a reflecting plate, wherein a length-adjustable platform consisting of one or more platforms is connected with the supporting legs through a connecting plate, the platform is provided with a slideway, and the leveling device, an alignment plate and the reflecting plate are in sliding connection with the platform through the slideway; one end of the standard steel tape is fixed through a pressing plate, the middle of the standard steel tape is flatly laid on the support shaft, and the other end of the standard steel tape is connected with a weight through a pulley.
Furthermore, the two platforms of the length-adjustable platform are connected through a connecting plate, and the connecting plate is connected with the supporting legs; the upper end of the platform is provided with two parallel convex slideways, the opposite inner sides of the slideways are provided with a plurality of rotatable support shafts, and the left side and the right side of the platform in the extension direction are connected by connecting shafts.
Furthermore, the adjusting screw is in threaded connection with the upper flat plate of the supporting leg; the connecting plate is provided with two parallel limiting strips, and the two sides of the platform are connected with the connecting shaft through the limiting strips.
Furthermore, a sliding flat plate is arranged at the bottom end of the leveling device and matched with a slide way of the platform, an M floating joint is arranged at the center of the upper end of the sliding flat plate, a plurality of cylindrical nuts are arranged around the M floating joint, leveling screws are arranged at the upper ends of the cylindrical nuts and are in threaded connection with the leveling screws, and the upper ends of the leveling screws are in surface contact with the flat plate.
Furthermore, a fixing screw is arranged on the side surface of the leveling device and is fixed with the platform through the side surface of the sliding flat plate.
Furthermore, a standard steel tape is fixed between the pressing plate and the fixing plate, one end of the fixing plate is fixed on the side face of the platform, an inverted concave plate for adjusting the pressing plate is arranged at the other end of the fixing plate, a pressing bolt is arranged on the inverted concave plate, and the pressing bolt is in contact with the pressing plate through a threaded hole of the inverted concave plate.
Furthermore, one end of a standard steel tape is fixed on the fixing plate through a pressing plate, and the other end of the standard steel tape is vertically downwards connected with a weight through a pulley; the horizontal height of the part between the two ends of the standard steel tape is kept through a plurality of support shafts.
Furthermore, a set screw is arranged on the side face of the sliding plate below the aligning plate, and the aligning plate is fixed with the platform through the set screw.
The advantages and effects are as follows:
the handheld laser range finder calibrating device is simple in structure and light in weight. The platform is easy to install and disassemble, can be freely spliced to any length, and is suitable for the condition that no site needs temporary lap joint. The friction force between the standard steel tape and the support shaft is small, so that the detection precision is improved; the platform is connected with the platform through a connecting plate with a limit, the lap joint is rapid and convenient, and the mounting can be carried out easily.
Drawings
FIG. 1 is a general schematic diagram of a hand-held laser rangefinder calibration apparatus;
FIG. 2 is a top view of a handheld laser rangefinder calibration apparatus;
FIG. 3 is a cross-sectional view of a handheld laser rangefinder calibration apparatus A-A;
FIG. 4 is a partial schematic view at I of a handheld laser rangefinder calibration apparatus;
FIG. 5 is a partial schematic view of a handheld laser rangefinder calibration apparatus;
FIG. 6 is a schematic structural view of a leveling device;
FIG. 7 is a schematic view of a web construction;
FIG. 8 is a support leg schematic.
Description of reference numerals:
1. the device comprises a platform, 2, supporting legs, 3, pulleys, 4, weights, 5, adjusting screws, 6, a connecting plate, 7, a support shaft, 8, a connecting shaft, 9, a standard steel tape, 10, a pressing plate, 11, a leveling device, 12, a laser range finder, 13, an alignment plate, 14, a reflecting plate, 15, fixing screws, 16, a placing flat plate, 17, leveling screws, 18, cylindrical nuts, 19, M8 floating joints, 20, a sliding flat plate, 21, a fixing plate, 22, an inverted concave plate, 23 and fastening screws.
Detailed Description
The handheld laser range finder calibrating device is handheld laser range finder calibrating equipment designed by taking a standard steel tape as a main standard according to JJG966-2010 (verification rules of handheld laser range finder), wherein the uncertainty of the standard steel tape is U less than or equal to 4 mu m and 3 multiplied by 10-6D, D is the length measured by a standard steel tape.
As shown in fig. 1 and 2, the handheld laser range finder calibrating device comprises a support leg 2, a standard steel tape 9 and a reflecting plate 14, wherein the reflecting plate 14 is connected with a platform 1 in a sliding manner; as shown in fig. 5, the length-adjustable platform is provided with a leveling device 11, an alignment plate 13, and a reflection plate 14 in this order from left to right.
The length-adjustable platform consisting of one or more platforms 1 is connected with the supporting legs 2 through the connecting plate 6, the platform 1 is provided with a slideway, and the leveling device 11, the aligning plate 13 and the reflecting plate 14 are in sliding connection with the platform 1 through the slideway; one end of a standard steel tape 9 is fixed through a pressing plate 10, the middle of the standard steel tape 9 is flatly laid on the support shaft 7, and the other end of the standard steel tape 9 is connected with a weight 4 through a pulley 3.
The dotted lines in fig. 1 and 2 indicate omitted parts, the distance used by the handheld laser rangefinder is unequal, and the length of the length-adjustable platform is generally set to be most accurate according to the actual measuring range required for more accurate measurement. The utility model discloses hand-held type laser range finder calibrating installation can set up a plurality of platforms, and the free concatenation is to arbitrary length, also is applicable to not having the place to need the condition of overlap joint temporarily.
As shown in fig. 3 and 4, two platforms 1 of the length-adjustable platform are connected through a connecting plate 6, and the connecting plate 6 is connected with the supporting legs 2; the upper end of the platform 1 is provided with two parallel convex slideways, the opposite inner sides of the slideways are provided with a plurality of rotatable supporting shafts 7, the lower parts of the supporting shafts 7 are also provided with connecting shafts 8, and the left side and the right side of the platform 1 in the extension direction are connected by the connecting shafts 8.
The supporting shaft 7 is used for preventing the standard steel tape 9 from falling down to influence the detection precision, and the standard steel tape is fixed on a plane in the prior art, so that the plane and the standard steel tape have large friction and are easy to generate large errors although the standard steel tape is prevented from falling down; the utility model discloses standard steel tape 9 is little with the frictional force of bearing axle 7, improves and detects the precision. Two ends of the connecting shaft 8 are provided with threads and fixed on two opposite sides in the platform 1 respectively through nuts. The two sides of the platform are fixed through the limiting strips on the two ends of the connecting shaft 8 and the lower end connecting plate 6.
As shown in fig. 5 and 7, the adjusting screw 5 is screwed with the supporting leg 2; the connecting plate 6 is provided with two parallel limiting strips, and the two sides of the platform 1 are connected with the connecting shaft 8 through the limiting strips.
As can be known from fig. 4, the lower end of the platform 1 is a left part and a right part 304 stainless steel square tube assembly welding part, and then the stainless steel square tube assembly welding part is connected through a connecting shaft 8, the weight is light and attractive, the inner sides of the upper ends of the stainless steel square tube assembly welding part are provided with two opposite strip-shaped slideways, a plurality of support shafts 7 are inserted between the slideways, the support shafts 7 are stainless steel round tubes, the stainless steel square tube assembly welding part can rotate and is in line contact with a standard steel tape 9, the friction force between the standard steel tape 9 and the support shafts 7 is reduced, and the straightening of the standard steel tape 9 in a vertical stretching state by.
The platform 1 has beautiful appearance, and the 304 stainless steel material is not influenced by the magnetic field.
The platform 1 and the platform 1 are connected by a connecting plate 6 and fixed by hexagon socket head cap screws, and the connecting plate 6 is provided with a limiting strip, so that the platforms 1 can be conveniently and quickly connected;
as shown in fig. 8, four adjusting screws 5 are arranged on a flat plate at the upper part of the supporting leg 2, the supporting leg 2 is arranged below the connecting plate 6, and the integral level of the platform 1 is adjusted by manually rotating the adjusting screws 5, so that the operation is convenient and rapid; the platform 1 can be freely spliced to any length and is suitable for the condition that no site needs to be temporarily lapped. The flat board of supporting leg upper portion has four adjusting screw 5, adjusts platform 1 level, convenient and fast through manual rotation adjusting screw 5.
As shown in fig. 6, a sliding flat plate 20 is arranged at the bottom end of the leveling device 11, the sliding flat plate 20 is matched with a slideway of the platform 1, an M8 floating joint 19 is arranged at the center of the upper end of the sliding flat plate 20, a plurality of cylindrical nuts 18 are arranged around the M8 floating joint 19, leveling screws 17 are arranged at the upper ends of the cylindrical nuts 18, the cylindrical nuts 18 are in threaded connection with the leveling screws 17, and the upper ends of the leveling screws 17 are in surface contact with the lower end of the placing flat plate 16. The placement plate 16 is used for placing a laser rangefinder. The M8 floating joint 19 is a conventional floating joint model, and the M8 floating joint 19 has the function of enabling the placing flat plate 16 to be in a floating state by utilizing spherical auxiliary connection and can swing up and down along a certain angle.
The leveling device 11 can slide along the platform 1 and comprises a placing flat plate 16, leveling screws 17, cylindrical nuts 18, M8 floating joints 19 and a sliding flat plate 20, wherein the placing flat plate 16 is connected with the sliding flat plate 20 through the M8 floating joints 19, the laser range finder 12 is horizontally placed on the placing flat plate 16, three leveling screws 17 are used for leveling through the cylindrical nuts 18, and the other two leveling screws 17 are used as auxiliary supports. The placing plate 16 and the leveling screws 17 are not fixed or linked, but only the upper end faces of the leveling screws 17 are brought into surface contact.
The side surface of the leveling device 11 is provided with a fixing screw 15, and the fixing screw 15 is fixed with the platform 1 through a fixing screw hole arranged on the side surface of the sliding flat plate 20.
A standard steel tape 9 is fixed between a pressure plate 10 and a fixing plate 21, one end of the fixing plate 21 is fixed on the side face of the platform 1, an inverted concave plate 22 for adjusting the pressure plate 10 is arranged at the other end of the fixing plate 21, a compression bolt is arranged on the inverted concave plate 22, and the compression bolt is in contact with the pressure plate 10 through a threaded hole of the inverted concave plate 22.
As shown in fig. 5, the standard steel tape 9 is pressed between the pressing plate 10 and the fixing plate 21, the pressing plate 10 and the fixing plate 21 are pressed by the pressing bolt, and when the standard steel tape 9 needs to be taken down, the pressing bolt is adjusted to loosen the space between the pressing plate 10 and the fixing plate 21, so that the standard steel tape 9 can be taken down.
One end of a standard steel tape 9 is fixed on the fixing plate 21 through a pressing plate 10, and the other end of the standard steel tape 9 is vertically downwards connected with a weight 4 through a pulley 3; the horizontal height of the part between the two ends of the standard steel measuring tape 9 is kept by a plurality of support shafts 7.
One end of a standard steel tape 9 is pressed by a pressing plate 10 through a pressing bolt, the middle part of the standard steel tape is flatly laid on the support shaft 7, and the other end of the standard steel tape is vertically suspended by a weight 4 around the pulley 3; the tightening state of the standard steel tape 9 is ensured, and the precision is ensured. The weight 4 is the weight specified by the corresponding standard.
The side surface of the sliding plate below the aligning plate 13 is provided with a set screw 23, and the aligning plate 13 is fixed with the platform 1 through the set screw (23). The set screw 23 is fixed to the platform 1 through a set screw hole. The height of the vertical plate edge above the alignment plate 13 is higher than that of the leveling device 11. The lower part of the reflecting plate 14 is connected with the slideway in a sliding way, the reflecting surface above the reflecting plate 14 is coated with 18 percent of Kodak ash, and the height of the reflecting plate 14 is higher than that of the leveling device 11 and the aligning plate 13.
The alignment plate 13 can slide along the platform 1, is adjusted to be aligned with the zero-scribed line of the standard steel tape 9 and then is fixed by the set screw 23, and the leveling device 11 is moved to enable the front end or the rear end of the laser range finder 12 to be tightly attached to the alignment plate 13, so that accurate range finding is guaranteed.
The laser rangefinder 12 can be easily leveled by the leveling device 11 so that the laser beam is projected onto the reflective plate 14 and parallel to the platform 1.
Example 1
As shown in fig. 1 and 2, in the calibrating device of the handheld laser range finder, a length-adjustable platform consisting of two platforms 1 is fixedly connected with supporting legs 2 through the lower part of a connecting plate 6, the platform 1 is provided with a slideway, and a leveling device 11, an alignment plate 13 and a reflecting plate 14 from left to right are in sliding connection with the platform 1 through the slideway; one end of a standard steel tape 9 is fixed through a pressing plate 10, the middle of the standard steel tape 9 is flatly paved on a plurality of support shafts 7, and the other end of the standard steel tape 9 is connected with a weight 4 through a pulley 3.
As shown in fig. 7, two platforms 1 of the length-adjustable platform are connected through a connecting plate 6, two ends of the length-adjustable platform are also connected through the connecting plate 6, and the lower part of the connecting plate 6 is connected with a supporting leg; the upper end of the platform 1 is provided with two parallel convex slideways, the opposite inner sides of the slideways are provided with a plurality of rotatable supporting shafts 7, the lower parts of the supporting shafts 7 are also provided with connecting shafts 8, and the left side and the right side of the platform 1 in the extension direction are connected by the connecting shafts 8. The connecting shaft 8 is connected with the 304 stainless steel square tube assembly and welding pieces on the left side and the right side, and the 304 stainless steel square tube assembly and welding pieces are fixedly connected with the connecting plate 6 below through bolts or screws.
The four adjusting screws 5 are in threaded connection with the upper flat plate of the supporting leg 2; the connecting plate 6 is provided with two parallel limiting strips, and the square tube assembly weldments on the two sides of the platform 1 are connected with the connecting shaft 8 through the limiting strips.
The bottom end of the leveling device 11 is provided with a sliding flat plate 20, the sliding flat plate 20 is matched with a slideway of the platform 1, the center of the upper end of the sliding flat plate 20 is provided with an M8 floating joint 19, five cylindrical nuts 18 are arranged around the M8 floating joint 19, the upper end of each cylindrical nut 18 is provided with a leveling screw 17, and the cylindrical nuts 18 are in threaded connection with the leveling screws 17. The side surface of the leveling device 11 is provided with a fixing screw 15, and the fixing screw 15 is fixed with the platform 1 through a fixing screw hole arranged on the side surface of the sliding flat plate 20.
A standard steel tape 9 is fixed between a pressure plate 10 and a fixing plate 21, one end of the fixing plate 21 is fixed on the side face of the platform 1, an inverted concave plate 22 for adjusting the pressure plate 10 is arranged at the other end of the fixing plate 21, a compression bolt is arranged on the inverted concave plate 22, and the compression bolt is in contact with the pressure plate 10 through a threaded hole of the inverted concave plate 22.
One end of a standard steel tape 9 is fixed on the fixing plate 21 through a pressing plate 10, and the other end of the standard steel tape 9 is vertically downwards connected with a weight 4 through a pulley 3; the part between the two ends of the standard steel measuring tape 9 is kept horizontal by a plurality of support shafts 7.
The side of the sliding plate below the aligning plate 13 is provided with a set screw 23, and the aligning plate 13 is fixed with the platform 1 through the set screw 23.
The utility model discloses hand-held type laser rangefinder calibrating installation's concrete operating procedure:
the adjusting screw 5 is adjusted to keep the platform 1 horizontal. Check if the standard steel tape 9 is taut, parallel to the platform 1. The level of the placing plate 16 is adjusted by the leveling screw 17 and the cylindrical nut 18. The laser distance meter 12 can be easily leveled by the leveling device 11, so that the laser beam is projected onto the reflection plate 14 and is parallel to the platform 1.
The lower edge of the vertical plate of the alignment plate 13 is aligned with the zero-marking line of the standard steel tape 9, and the position of the alignment plate 13 is fixed by locking the set screw 23. The front end face or the rear end face of the laser range finder 12 on the leveling device 11 is in close contact with the end face of the alignment plate 13, so that the starting point of the distance measured by the laser range finder 12 is guaranteed to be on zero scale.
The reflecting plate 14 slides in a straight line on the platform with the adjustable length, a corresponding distance is found on the standard steel tape 9, and the laser range finder 12 reads for multiple times to measure the distance. And calculating the indicating value error according to JJG966-2010 'verification rule of the handheld laser range finder'.
Claims (8)
1. Hand-held type laser rangefinder calibrating installation, including supporting leg (2), standard steel tape (9) and reflecting plate (14), its characterized in that: the length-adjustable platform consisting of one or more platforms (1) is connected with the supporting legs (2) through the connecting plate (6), the platform (1) is provided with a slideway, and the leveling device (11), the aligning plate (13) and the reflecting plate (14) are in sliding connection with the platform (1) through the slideway; one end of a standard steel tape (9) is fixed through a pressing plate (10), the middle of the standard steel tape (9) is tiled on a support shaft (7), and the other end of the standard steel tape (9) is connected with a weight (4) through a pulley (3).
2. The hand-held laser rangefinder calibrating apparatus of claim 1, wherein: the two platforms (1) of the length-adjustable platform are connected through a connecting plate (6), and the connecting plate (6) is connected with the supporting legs (2);
two parallel convex slideways are arranged at the upper end of the platform (1), a plurality of rotatable supporting shafts (7) are arranged on the opposite inner sides of the slideways, and the left side and the right side of the platform (1) in the extension direction are connected through connecting shafts (8).
3. The hand-held laser rangefinder certification apparatus according to claim 1 or 2, wherein: the adjusting screw (5) is in threaded connection with the upper flat plate of the supporting leg (2); the connecting plate (6) is provided with two parallel limiting strips, and the two sides of the platform (1) are connected with the connecting shaft (8) through the limiting strips.
4. The hand-held laser rangefinder calibrating apparatus of claim 1, wherein: the bottom end of the leveling device (11) is provided with a sliding flat plate (20), the sliding flat plate (20) is matched with a slide way of the platform (1), the center of the upper end of the sliding flat plate (20) is provided with an M8 floating joint (19), a plurality of cylindrical nuts (18) are arranged around the M8 floating joint (19), the upper ends of the cylindrical nuts (18) are provided with leveling screws (17), the cylindrical nuts (18) are in threaded connection with the leveling screws (17), and the upper ends of the leveling screws (17) are in surface contact with the placing flat plate (16).
5. The hand-held laser rangefinder certification apparatus according to claim 1 or 4, wherein: the side surface of the leveling device (11) is provided with a fixing screw (15), and the fixing screw (15) is fixed with the platform (1) through the side surface of the sliding flat plate (20).
6. The hand-held laser rangefinder calibrating apparatus of claim 1, wherein: a standard steel tape (9) is fixed between a pressing plate (10) and a fixing plate (21), one end of the fixing plate (21) is fixed on the side face of a platform (1), an inverted concave plate (22) for adjusting the pressing plate (10) is arranged at the other end of the fixing plate (21), a pressing bolt is arranged on the inverted concave plate (22), and the pressing bolt is in contact with the pressing plate (10) through a threaded hole of the inverted concave plate (22).
7. The hand-held laser rangefinder certification apparatus according to claim 1 or 6, wherein: one end of a standard steel tape (9) is fixed on the fixing plate (21) through a pressing plate (10), and the other end of the standard steel tape (9) is vertically downwards connected with the weight (4) through a pulley (3); the horizontal height of the part between the two ends of the standard steel measuring tape (9) is kept through a plurality of support shafts (7).
8. The hand-held laser rangefinder calibrating apparatus of claim 1, wherein: the side surface of the sliding plate below the aligning plate (13) is provided with a set screw (23), and the aligning plate (13) is fixed with the platform (1) through the set screw (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921336954.4U CN210487972U (en) | 2019-08-19 | 2019-08-19 | Hand-held laser rangefinder calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921336954.4U CN210487972U (en) | 2019-08-19 | 2019-08-19 | Hand-held laser rangefinder calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210487972U true CN210487972U (en) | 2020-05-08 |
Family
ID=70536247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921336954.4U Active CN210487972U (en) | 2019-08-19 | 2019-08-19 | Hand-held laser rangefinder calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210487972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521997A (en) * | 2020-06-09 | 2020-08-11 | 开封市质量技术监督检验测试中心 | Hand-held type laser range finder verification system |
-
2019
- 2019-08-19 CN CN201921336954.4U patent/CN210487972U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521997A (en) * | 2020-06-09 | 2020-08-11 | 开封市质量技术监督检验测试中心 | Hand-held type laser range finder verification system |
| CN111521997B (en) * | 2020-06-09 | 2023-08-01 | 开封市质量技术监督检验测试中心 | Verification system of handheld laser range finder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7611105B1 (en) | Corner prism pole and stand | |
| CN210487972U (en) | Hand-held laser rangefinder calibrating installation | |
| CN219200343U (en) | Pipeline measuring tool for online detection of large-caliber liquid flowmeter | |
| CN109581337A (en) | A kind of laser radar optical calibrating device | |
| US6308428B1 (en) | Laser alignment system | |
| CN205785097U (en) | A kind of manual force application device for measuring material shear strain | |
| CN109539943A (en) | A kind of concrete structure crack width detecting and method | |
| CN105444782B (en) | The indoor full-automatic detection method of baseline | |
| CN210347331U (en) | Guardrail horizontal load resistance on-site detection device | |
| CN107328524A (en) | Adjustable pitch propeller static balance measuring method and its device | |
| CN111562550A (en) | Passive dihedral angle external calibrator | |
| CN110346769A (en) | A kind of portable testing jig equipment for millimetre-wave radar test | |
| CN211915039U (en) | Metal bent pipe bending forming performance measuring device | |
| US7076879B2 (en) | Stabilizer jig for distance measuring laser | |
| CN205373635U (en) | Side image measurement device | |
| CN209640486U (en) | A kind of laser radar optical calibrating device | |
| US4738532A (en) | Method of calibrating an optical measuring system | |
| US6305092B1 (en) | Level with plumb alignment features | |
| JPH07311038A (en) | Inclination measuring device | |
| US6543148B2 (en) | Level with plumb alignment features | |
| CN110953446A (en) | Swinger support and measuring method | |
| CN218566643U (en) | Ultrasonic wave level gauge calibrating device | |
| CN110899378B (en) | Device for measuring bending forming performance of metal bent pipe | |
| CN219551659U (en) | Horizontal liquid level simulation calibrating device | |
| JPH0355053Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |