JPH01318913A - Automatic apparatus for leveling up - Google Patents

Automatic apparatus for leveling up

Info

Publication number
JPH01318913A
JPH01318913A JP15103288A JP15103288A JPH01318913A JP H01318913 A JPH01318913 A JP H01318913A JP 15103288 A JP15103288 A JP 15103288A JP 15103288 A JP15103288 A JP 15103288A JP H01318913 A JPH01318913 A JP H01318913A
Authority
JP
Japan
Prior art keywords
surface plate
legs
leg
inclination
male screw
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.)
Granted
Application number
JP15103288A
Other languages
Japanese (ja)
Other versions
JP2632372B2 (en
Inventor
Hideya Kawachi
河内 英也
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.)
Sokkisha Co Ltd
Original Assignee
Sokkisha 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 Sokkisha Co Ltd filed Critical Sokkisha Co Ltd
Priority to JP63151032A priority Critical patent/JP2632372B2/en
Publication of JPH01318913A publication Critical patent/JPH01318913A/en
Application granted granted Critical
Publication of JP2632372B2 publication Critical patent/JP2632372B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Details Of Measuring And Other Instruments (AREA)

Abstract

PURPOSE:To make a surface plate horizontal automatically or manually by a method wherein a male screw element to which a driving device is connected is moved vertically in accordance with an output of an inclination sensor and thereby the amount of projection of a leg below the surface plate is adjusted. CONSTITUTION:A leveling table 1 has a construction wherein a triangular surface plate 2 is set on a triangular base board 4 through the intermediary of legs 3a, 3b and 3c provided at positions corresponding to the vertexes of the surface plate 2. The leg 3a is composed of a fixed leg column 3a-1 fixed on the lower side of the surface plate 2 and of an elastic leg column 3a-2. The other legs 3b and 3c are composed likewise. An X-Y coordinate inclination sensor 15 wherein a control circuit is incorporated is provided the lateral edge part of the surface plate 2 at the center between the legs 3b and 3c, and this sensor detects the amounts (thetaX and thetaY) of inclination around the X axis and the Y axis of the surface plate 2 and supplies outputs of these amounts to the respective driving motors 12 of the legs 3b and 3c. The driving motors 12 are driven in the directions wherein the amounts of inclination are made to be zero, so as to adjust the surface plate 2 to be horizontal.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、IIP1距儀や測角儀等の測量機を水平に保
つための!準装置、特に傾斜センサを備え、該センサに
より検出された傾斜を自動的に零にするようにした自動
整準装置に関する。
[Detailed Description of the Invention] (Industrial Application Field) The present invention is for keeping surveying instruments such as IIP1 rangefinders and goniometers level! The present invention relates to an automatic leveling device that is equipped with a tilt sensor and automatically zeroes the tilt detected by the sensor.

(従来の技術) 従来、気泡管を使用した整準装置にあっては、水平出し
を行なうに当って、熟練を必要としていた。また従来の
整準装置として第6図に示すように、三角形状定盤aに
一本の固定脚b1と2本の可動脚b2、b3が設けられ
、該2本の可動脚b2、b3は定盤aの下方への突出量
を調整できるようにされ、該定盤aに取付けられた水平
検出器CいC2によって定盤aの傾斜量が検出されると
、その傾斜量が零となるように2本の可動脚I)2、b
3がそれぞれ駆動装置d1、d2によって駆動されて定
盤aが水平状態になるように構成されている。
(Prior Art) Conventionally, a leveling device using a bubble tube requires skill to perform leveling. As shown in FIG. 6, a conventional leveling device is provided with one fixed leg b1 and two movable legs b2 and b3 on a triangular surface plate a. The amount of downward protrusion of the surface plate a can be adjusted, and when the amount of inclination of the surface plate a is detected by the horizontal detector CC2 attached to the surface plate a, the amount of inclination becomes zero. Two movable legs I) 2, b
3 are driven by drive devices d1 and d2, respectively, so that the surface plate a is placed in a horizontal state.

(発明が解決しようとする課題) 上記の従来装置によれば、水平検出器C1、C2及び駆
動装置d1、d2から成る自動整準機構が狂ったとき、
該機構の駆動源であるバッテリが切れたとき等には、手
動による水平調整が必要となるが、可動脚b2、b3の
手動操作ができる構造にはなっていない。
(Problems to be Solved by the Invention) According to the above conventional device, when the automatic leveling mechanism consisting of the horizontal detectors C1 and C2 and the drive devices d1 and d2 goes out of order,
When the battery, which is the driving source of the mechanism, runs out, manual horizontal adjustment is required, but the movable legs b2 and b3 are not structured to allow manual operation.

本発明は、定盤を自動的に水平状態に調整できると共に
手動操作もできる構成の簡潔な自動整準装置を提供する
ことをその目的とするものである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a simple automatic leveling device that can automatically adjust a surface plate to a horizontal state and can also be operated manually.

(課題を解決するための手段) 本発明は、上記の目的を達成するために、三角形の三つ
の頂点に相当する個所でそれぞれ定盤を支持する3つの
脚と、定盤の傾斜を検知する傾斜センサと、該傾斜セン
サの出力信号により前記3つの脚のうちの2つの脚をそ
れぞれ駆動する2つの駆動装置とを備え、定盤の傾斜が
無くなるまで前記2つの脚の定盤下方の突出長を変える
ことにより定盤を自動的に水平にするようにした整準装
置において、前記2つの脚は、それぞれ、定盤に取付け
られた前記駆動装置に連結されて回転可能な雄ネジ部と
、該雄ネジ部の下方にこれと同軸状に配設された手動雄
ネジ部と、前記雄ネジ部及び該手動雄ネジ部に螺合され
、回り止めされた筒形状雌ネジ部とから成ることを特徴
とする。
(Means for Solving the Problems) In order to achieve the above object, the present invention includes three legs that respectively support a surface plate at positions corresponding to three vertices of a triangle, and detects the inclination of the surface plate. comprising an inclination sensor and two drive devices that respectively drive two of the three legs based on the output signal of the inclination sensor, and the two legs protrude below the surface plate until the surface plate no longer tilts. In the leveling device that automatically levels the surface plate by changing the length, each of the two legs has a male screw portion that is rotatable by being connected to the drive device attached to the surface plate. , a manual male threaded part disposed below and coaxially with the male threaded part, and a cylindrical female threaded part that is screwed onto the male threaded part and the manual male threaded part and is prevented from rotating. It is characterized by

(作 用) 傾斜センサの出力に応じて駆動装置がこれに連結されて
回転可能な雄ネジ部を上下動し、それにより脚の定盤下
方への突出量は調整され定盤が自動的に水平状態になる
(Function) A drive device is connected to the tilt sensor and moves the rotatable male screw part up and down in accordance with the output of the tilt sensor, thereby adjusting the amount of protrusion of the legs below the surface plate and automatically moving the surface plate. Becomes horizontal.

また、駆動装置を駆動させない場合には、手動雄ネジ部
を回動すると、筒形状雌ネジ部が上下動して脚の定盤下
方への突出量が調節され、例えば気泡管に合わせること
により定盤は水平状態になる。
In addition, when the drive device is not driven, when the manual male screw section is rotated, the cylindrical female screw section moves up and down to adjust the amount of protrusion of the legs below the surface plate. The surface plate becomes horizontal.

(実施例) 以下本発明の実施例を図面につき説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

第1図乃至第3図において、1は整準台で、これは三角
形状の定盤2がその頂点に相当する位置に設けられた脚
3a、 3b、 3cを介して三角形状の架盤4上に載
置されて構成されている。該架盤4は例えば3脚(図示
せず)によって支持される。脚3aは定盤2の下面に固
定された固定脚柱3a−1と、該固定脚柱3a−1に螺
合連結されこれから伸縮動作可能な伸縮脚柱3a−2と
から成っている。該伸縮脚柱3a−2は、上端雄ネジ部
5aと整準ネジ部8aと膨出部7aと下端部8aとから
成り、該下端部8aがプレート9に載置され、該膨出部
7aはストッパ一部材IOに拘束された架盤4の押え板
11の孔に係合して伸縮脚柱3a〜2が架盤4から脱落
しないようになっている。
In FIGS. 1 to 3, reference numeral 1 denotes a leveling table, in which a triangular surface plate 2 is connected to a triangular platform 4 via legs 3a, 3b, and 3c provided at positions corresponding to the vertices of the triangular surface plate 2. It is configured by being placed on top. The rack 4 is supported by, for example, three legs (not shown). The leg 3a consists of a fixed pedestal 3a-1 fixed to the lower surface of the surface plate 2, and an extendable pedestal 3a-2 which is threadedly connected to the fixed pedestal 3a-1 and can be extended and contracted. The telescoping column 3a-2 consists of an upper end male screw portion 5a, a leveling screw portion 8a, a bulge portion 7a, and a lower end portion 8a, the lower end portion 8a is placed on a plate 9, and the bulge portion 7a is engaged with a hole in a presser plate 11 of the frame 4 which is restrained by the stopper member IO to prevent the telescopic pillars 3a to 2 from falling off the frame 4.

他の脚3bは、定盤2内に収容固定された例えば超音波
モータ等の駆動モータ12の回転駆動軸12aに固定用
ビス13で連結され、外周の雄ネジが形成されている雄
ネジ部としての回転軸ab−tと該回転軸3b−1に螺
合する筒形状雌ネジ部としての脚筒3b−2と、該脚g
J3b−2の下端部の雌ネジ部に螺合しこれより伸縮動
作可能な伸縮脚柱3b−3とから成っている。該伸縮脚
柱3b−3は前記伸縮脚柱3a−2と同様に上端雄ネジ
部5bと整準ネジ6bと膨出部7bと下端部2bとから
成っている。
The other leg 3b is connected with a fixing screw 13 to a rotational drive shaft 12a of a drive motor 12, such as an ultrasonic motor, housed and fixed in the surface plate 2, and has a male threaded portion formed with a male thread on the outer periphery. a rotating shaft ab-t as a rotating shaft ab-t, a leg cylinder 3b-2 as a cylindrical female screw portion screwed to the rotating shaft 3b-1, and the leg g.
It consists of a telescopic column 3b-3 which is screwed into the female threaded portion at the lower end of J3b-2 and can be extended and contracted from this. The telescopic pillar 3b-3, like the telescopic pillar 3a-2, is composed of an upper end male threaded portion 5b, a leveling screw 6b, a bulging portion 7b, and a lower end portion 2b.

他の脚3cも脚3bと同様に構成されている。該脚3b
と30の間には、第3図に示すように、両端部が脚筒3
b−2,3cm2に固定されて水平に延在する水平アー
ム14 (第3図)が設けられている。
The other leg 3c is also constructed in the same manner as the leg 3b. The leg 3b
and 30, as shown in FIG.
A horizontal arm 14 (FIG. 3) is provided which is fixed to b-2,3 cm2 and extends horizontally.

該水平アーム14は、駆動モータ12の回転駆動時に脚
筒3b−2,3cm2の回動を阻止する回り止め部材と
して作用する。該水平アーム14の略中央部に形成され
た円弧形状湾曲部14aは、脚3b、 3cの相対伸縮
により、水平アーム■4に生ずる引張応力を吸収するた
めのものである。
The horizontal arm 14 acts as a rotation preventing member that prevents the leg cylinders 3b-2, 3cm2 from rotating when the drive motor 12 is driven to rotate. An arc-shaped curved portion 14a formed approximately at the center of the horizontal arm 14 is for absorbing tensile stress generated in the horizontal arm 4 due to relative expansion and contraction of the legs 3b and 3c.

脚3bと3c間中央の定盤2側縁部には、制御回路が内
蔵されたX−Y座標傾斜センサ15が設けられており、
これは定盤2のX軸、Y軸回りの傾斜量(θ8、θ、)
を検知し、この出力を各脚3b、3cの駆動モータ12
に供給する。駆動モータI2は傾斜量を零にする方向に
駆動される。16は円形気泡管で、これは、自動整準機
構が狂った場合とか、バッテリ切れの場合のように、手
動で整準したい場合に定盤2の水平状態を確認するため
に使用する。
An X-Y coordinate tilt sensor 15 with a built-in control circuit is provided on the side edge of the surface plate 2 in the center between the legs 3b and 3c.
This is the amount of inclination of surface plate 2 around the X-axis and Y-axis (θ8, θ,)
is detected, and this output is sent to the drive motor 12 of each leg 3b, 3c.
supply to. The drive motor I2 is driven in a direction that makes the amount of inclination zero. Reference numeral 16 denotes a circular bubble tube, which is used to check the horizontal state of the surface plate 2 when manual leveling is desired, such as when the automatic leveling mechanism goes awry or when the battery runs out.

前記傾斜センサ15による自動整準のフローを説明する
と、まず、X軸回りの傾斜があるか否かを見て、傾斜が
あればこれを零にするために、その出力を低い高さ側の
脚3b又は3Cの駆動モータ12に供給し、該駆動モー
タ12の駆動によりY軸、すなわち脚3b、 3cを結
んだ直線を水平状態にする。次いでY軸回りの傾斜があ
るか否かをチエツクし、傾斜があれば、これを零にする
ためにその出力を脚3b及び3cの駆動モータ12に供
給し、該駆動モータ12の駆動により脚3b及び3cを
同量だけ下方に突出させ又は引込めてY軸回りの傾斜を
零とする。再びX軸回りの傾斜があるか否かを見て、な
ければこれで終了するが、あれば再び同じ手順をくり返
す。
To explain the flow of automatic leveling using the tilt sensor 15, first, it is checked whether there is a tilt around the It is supplied to the drive motor 12 of the leg 3b or 3C, and by driving the drive motor 12, the Y axis, that is, the straight line connecting the legs 3b and 3c, is brought into a horizontal state. Next, it is checked whether there is an inclination around the Y axis, and if there is an inclination, the output is supplied to the drive motors 12 of the legs 3b and 3c to make the inclination zero, and the legs are driven by the drive motors 12. 3b and 3c are made to protrude or retract downward by the same amount to make the inclination around the Y axis zero. Check again to see if there is any inclination around the X axis. If not, this is the end, but if so, repeat the same procedure again.

手動整準のときは、前記傾斜センサ15及び駆動モータ
12への通電を停止すると、該駆動モータ12の回転駆
動軸12aはロックされるので、3本の脚3a、 3b
、 3cの伸縮脚柱3a−2,3b−3,3cm3を気
泡管1Bを見なから回動操作することにより、定盤2の
整準を行なうことができる。
During manual leveling, when the power supply to the tilt sensor 15 and drive motor 12 is stopped, the rotational drive shaft 12a of the drive motor 12 is locked, so that the three legs 3a, 3b are locked.
, 3c, by rotating the telescopic pillars 3a-2, 3b-3, 3cm3 without looking at the bubble tube 1B, the surface plate 2 can be leveled.

前記実施例では、脚筒3b−2,3cm2の回り止めの
手段として水平アーム14を用いているが、これに代え
て第4図示のように定盤2の下面に突設した筒状体1B
を用い、これに脚筒3b−2,3cm2を嵌合し、該脚
筒3b−2,3cm2に植設したピン19を筒状体18
のガイド溝20に係合させるような構造でもよい。
In the above embodiment, the horizontal arm 14 is used as a means for preventing rotation of the leg cylinders 3b-2, 3cm2, but instead of this, a cylindrical body 1B protruding from the lower surface of the surface plate 2 as shown in the fourth figure is used.
, fit the leg tube 3b-2, 3cm2 thereto, and insert the pin 19 implanted in the leg tube 3b-2, 3cm2 into the cylindrical body 18.
The structure may be such that it is engaged with the guide groove 20 of.

第5図は本発明を適用した711j2機を示す。定盤2
上のΔNN量水本体17側壁には、前記X−Y座標傾斜
センサ15と制御回路15aが設けられている。超音波
モータの電源は回転軸に設けられたスリップリングを介
して制御回路と接続されている。
FIG. 5 shows two 711J aircraft to which the present invention is applied. Surface plate 2
The X-Y coordinate tilt sensor 15 and the control circuit 15a are provided on the side wall of the upper ΔNN quantity water main body 17. The power source of the ultrasonic motor is connected to a control circuit via a slip ring provided on the rotating shaft.

(発明の効果) 本発明は上述の通り構成されているので、自動的に定盤
を水平状態にでき、測量機のセットが迅速にできるばか
りでなく、自動整準機構が故障したとき、駆動用バッテ
リが切れたとき等には、手動により定盤を水平にでき、
且つその構成が簡潔である等の効果を有する。
(Effects of the Invention) Since the present invention is configured as described above, it is possible to automatically level the surface plate, and not only can the surveying instrument be set quickly, but also when the automatic leveling mechanism malfunctions, the When the battery runs out, the surface plate can be leveled manually.
In addition, it has advantages such as a simple configuration.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の斜視図、第2図はその一部
破断した正面型、第3図はその一部破断した側面図、第
4図は他の実施例の第3図に対応する一部破断した側面
図、第5図は本発明を適用した測量機の正面図、第6図
は従来例の斜視図である。 2・・・定 盤 3a、3b13c・・・脚 3b−1・・・回転軸 3b−2,3c−2−・・脚 筒 3b−3,3cm3−・・伸縮脚柱 15・・・傾斜センサ 第4図 第1図 第5図
Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a partially broken front view thereof, Fig. 3 is a partially broken side view thereof, and Fig. 4 is a third view of another embodiment. FIG. 5 is a front view of a surveying instrument to which the present invention is applied, and FIG. 6 is a perspective view of a conventional example. 2... Surface plate 3a, 3b13c... Leg 3b-1... Rotating shaft 3b-2, 3c-2... Leg tube 3b-3, 3cm3... Telescopic column 15... Tilt sensor Figure 4 Figure 1 Figure 5

Claims (1)

【特許請求の範囲】 1、三角形の三つの頂点に相当する個所でそれぞれ定盤
を支持する3つの脚と、定盤の傾斜を検知する傾斜セン
サと、該傾斜センサの出力信号により前記3つの脚のう
ちの2つの脚をそれぞれ駆動する2つの駆動装置とを備
え、定盤の傾斜が無くなるまで前記2つの脚の定盤下方
の突出長を変えることにより定盤を自動的に水平にする
ようにした整準装置において、前記2つの脚は、それぞ
れ、定盤に取付けられた前記駆動装置に連結されて回転
可能な雄ネジ部と、該雄ネジ部の下方にこれと同軸状に
配設された手動雄ネジ部と、前記雄ネジ部及び該手動雄
ネジ部に螺合され、回り止めされた筒形状雌ネジ部とか
ら成ることを特徴とする自動整準装置。 2、前記定盤に取付けられた駆動装置が該定盤内に収容
固定された超音波モータであることを特徴とする請求項
1記載の自動整準装置。
[Claims] 1. Three legs that respectively support the surface plate at positions corresponding to the three vertices of the triangle, a tilt sensor that detects the tilt of the surface plate, and an output signal of the tilt sensor to detect the three legs. and two driving devices that respectively drive two of the legs, and the surface plate is automatically leveled by changing the protruding length of the two legs below the surface plate until the surface plate is no longer tilted. In the leveling device, each of the two legs includes a male screw portion that is rotatable by being connected to the drive device attached to the surface plate, and a male screw portion that is disposed coaxially with the male screw portion below the male screw portion. An automatic leveling device comprising: a manual male threaded portion; and a cylindrical female threaded portion that is screwed onto the male threaded portion and the manual male threaded portion to prevent rotation. 2. The automatic leveling device according to claim 1, wherein the drive device attached to the surface plate is an ultrasonic motor housed and fixed within the surface plate.
JP63151032A 1988-06-18 1988-06-18 Automatic leveling device Expired - Fee Related JP2632372B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63151032A JP2632372B2 (en) 1988-06-18 1988-06-18 Automatic leveling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63151032A JP2632372B2 (en) 1988-06-18 1988-06-18 Automatic leveling device

Publications (2)

Publication Number Publication Date
JPH01318913A true JPH01318913A (en) 1989-12-25
JP2632372B2 JP2632372B2 (en) 1997-07-23

Family

ID=15509811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63151032A Expired - Fee Related JP2632372B2 (en) 1988-06-18 1988-06-18 Automatic leveling device

Country Status (1)

Country Link
JP (1) JP2632372B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179413A (en) * 1988-12-29 1990-07-12 Topcon Corp Surveying instrument, main body of same and base employed for same
JPH04122312U (en) * 1991-04-23 1992-11-02 三菱重工業株式会社 Automatic horizontal positioning device
KR100844906B1 (en) * 2006-12-21 2008-07-09 한국표준과학연구원 Apparatus for calibrating the level insensitive to run-out of rotating axis
JP2009014368A (en) * 2007-07-02 2009-01-22 Topcon Corp Automatic leveling device for survey machine
KR101103356B1 (en) * 2009-12-10 2012-01-05 주식회사 영화키스톤건축사사무소 Installation for measurement with auto control function

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56138396U (en) * 1980-03-21 1981-10-20
JPS60512U (en) * 1983-06-17 1985-01-05 株式会社 測機舎 Adjustment mechanism for leveling screw of surveying instrument
JPS63137204A (en) * 1986-11-28 1988-06-09 Kyocera Corp Lens barrel for driving automatic and manual lens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56138396U (en) * 1980-03-21 1981-10-20
JPS60512U (en) * 1983-06-17 1985-01-05 株式会社 測機舎 Adjustment mechanism for leveling screw of surveying instrument
JPS63137204A (en) * 1986-11-28 1988-06-09 Kyocera Corp Lens barrel for driving automatic and manual lens

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179413A (en) * 1988-12-29 1990-07-12 Topcon Corp Surveying instrument, main body of same and base employed for same
JPH04122312U (en) * 1991-04-23 1992-11-02 三菱重工業株式会社 Automatic horizontal positioning device
KR100844906B1 (en) * 2006-12-21 2008-07-09 한국표준과학연구원 Apparatus for calibrating the level insensitive to run-out of rotating axis
JP2009014368A (en) * 2007-07-02 2009-01-22 Topcon Corp Automatic leveling device for survey machine
KR101103356B1 (en) * 2009-12-10 2012-01-05 주식회사 영화키스톤건축사사무소 Installation for measurement with auto control function

Also Published As

Publication number Publication date
JP2632372B2 (en) 1997-07-23

Similar Documents

Publication Publication Date Title
US9574706B2 (en) Folding image stabilizer
CN1139783C (en) Laser plumb device,and apparatus and method for correction of plumbline of long member
CN109900260B (en) Measuring device for road construction
CA1112860A (en) Theodolite leveling means
JPH01318913A (en) Automatic apparatus for leveling up
JP2009014368A (en) Automatic leveling device for survey machine
CN213780534U (en) Adjustable optical instrument positioning device
US3911589A (en) Adjustable support base for a field measurement device
KR101910433B1 (en) Apparatus for fixing leveling equipment and triangle stand
CN209229297U (en) A kind of leveling tripod
CN109404698A (en) A kind of leveling tripod
CN214037579U (en) Auxiliary leveling device for laser level capable of adapting to various terrains
JPH06281461A (en) Prism support device for light wave distance meter
JP3215705U (en) Anti-scattering body support
US2921764A (en) Adjustable pedestal for mounting precision and power equipment
GB2052782A (en) Camera support
CN217784681U (en) Simple laser level meter fixing support
JP2619772B2 (en) Automatic level gauge
CN220602542U (en) High construction precision line projector
JPH08320224A (en) Level regulator
JPS5919195Y2 (en) Surveying pole tripod stand
CN219528997U (en) Vertical drilling detection device for constructional engineering
CN216308791U (en) Angle positioning device
JPH09250926A (en) Laser device for horizontal marking
CN214173369U (en) Surveying instrument positioning device for surveying and mapping

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees