Topcon GLS-1000 SERIES Instruction Manual
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Topcon GLS-1000 SERIES Instruction Manual

Topcon GLS-1000 SERIES Instruction Manual

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INSTRUCTION MANUAL
LASER SCANNER
GLS-1000
SERIES
64650 90070

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  • Page 1 INSTRUCTION MANUAL LASER SCANNER GLS-1000 SERIES 64650 90070...
  • Page 3 FOREWORD Thank you for purchasing the TOPCON Laser Scanner, GLS-1000 series. For the best performance of the instruments, please carefully read these instructions and keep them in a convenient location for future reference.

  • Page 4: General Handling Precautions

    General Handling Precautions Before starting work or operation, be sure to check that the instrument is functioning correctly with normal performance. Using the instrument on rainy days It may not be possible to use the instrument if there are water drops on the glass of the windows.

  • Page 5: Display For Safe Use

    • There is a risk of fire, electric shock or physical harm if you attempt to disassemble or repair the instrument yourself. This is only to be carried out by TOPCON or an authorized dealer, only! • High temperature may cause fire.

  • Page 6: User

    CAUTION • Use of controls or adjustment or performance of procedures other than those specified herein may result in haz- ardous radiation exposure. • Risk of injury by overturn the carrying case. Do not stand or sit on the carrying cases. •...

  • Page 7: Laser Safety

    "Complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No. 50, dated (July 26, 2001)" As per the said standard, the GLS-1000 series is classified as "Class 1 Laser Products". In case of any failure, do not disassemble the instrument. Contact TOPCON or your TOPCON dealer.

  • Page 8: Table Of Contents

    Contents FOREWORD ..........1 General Handling Precautions.
  • Page 9 7 Station Setting ..........7-1 7.1 Creating a New Station.

  • Page 10: Standard Components

    Standard Components The numerical value in parentheses shows the quantity. GLS-1000 with head cover(1) Plastic carrying case [Casters included](1) Battery charger BC-30D(2) Battery BT-65Q(4) [Charger(2), AC/DC Converter AD-12(2), AC-Cable(2)] Target board [small](1) Tool kit with case(1) Attach a [M (middle)] or [S (small)] target sheet [ rod pin(2), screwdriver(1), cleaning brush(1) ] (magnet type).

  • Page 11: Attaching/Removing Casters On The Carrying Case

    USB cable F-25(1) Silicon cloth(1) Target sheet [Magnet type] : Middle(1), Small(1) Target sheet : Middle(10), Small(5) Instruction manual(1) Make sure that all of the above items are with the instrument when purchased. Attaching/removing casters on the carrying case At the time of purchase, casters are stored inside the case. Remove them from the case and attach as necessary.

  • Page 12: Nomenclature And Functions

    1 NOMENCLATURE AND FUNCTIONS NOMENCLATURE AND FUNCTIONS 1.1 Nomenclature Horizontally rotating part (head) Collimating window Vertical jog Instrument center mark Horizontal jog Display Operation key Battery cover Battery cover lever Circular level Handle Adjustment screw for circular level Optical plummet telescope Tribrach Battery connector...
  • Page 13 1 NOMENCLATURE AND FUNCTIONS Window Handgrip Wireless LAN cover Cover screw Back battery cover SD card slot I/O cards cannot be used. USB connector USB memory cannot be used. Leveling screw Tribrach fixing lever...

  • Page 14: Display

    1 NOMENCLATURE AND FUNCTIONS Vertical jog Horizontal jog Sighting collimator Collimating window Collimate from here 1.2 Display Display The display uses a character-type LCD which has 4 lines and 20 characters per line. Contrast and Illumination The contrast and illumination of display window are adjusted. See 5.1 “Settings by the Star Key”. Example STATION MENU SCAN MENU...

  • Page 15: Operating Key

    1 NOMENCLATURE AND FUNCTIONS 1.3 Operating Key Alphanumeric characters key Keys Name of Key Function POWER Power source key ON/OFF of power source Star key mode is used for each presetting or displaying. Star key To select function of Star key, see Chapter 5.1 “Settings by the Star Key” . Escape key Returning to the previous display.

  • Page 16: Preparations Before Use

    2 Preparations before Use Preparations before Use The following are the preparation procedures before use. Inserting a wireless LAN card (when the instrument is used connected to a PC) It is necessary to insert a wireless LAN card for wireless communication between the instrument and the PC.

  • Page 17: Connecting To A Power Source

    2 Preparations before Use Inserting an SD card (when the instrument is used alone (stand alone)) All of the data including project, station information, and scanning data will be recorded on the SD card. Make sure to insert an SD card before scanning. Open the card slot cover.
  • Page 18 2 Preparations before Use When using an external power source Connect the clips of the external power source cable (PC-21) to the terminals of the external power source (12V, commercially available). Red clip (+) Battery terminal External battery Black clip (-) PC-21 Connect the external power source cable (PC-21) to the battery connector.
  • Page 19 2 Preparations before Use Connection via USB cable Connect a USB cable(F-25) to the USB connector. The USB connection is automatically recognized and [PC CONTROL MODE] is displayed. USB connector USB connector is for connection to PC, and USB memory cannot be connected.

  • Page 20: Overview Of Scanning

    3 Overview of Scanning Overview of Scanning 3.1 Procedure for Scanning The following are the procedures for scanning. When the instrument is used alone Scanning Preparation . Mount and level the instrument. Refer to Chapter 4.2 “Mount the Instrument to the Tripod”. .

  • Page 21: Turning The Power Off

    3 Overview of Scanning When the instrument is used connected to a PC Scanning Preparation . Mount and level the instrument. Refer to Chapter 4.2 “Mount the Instrument to the Tripod”. . Turn the power ON. Refer to Chapter 4.3 “Power Switch Key ON”. Using the PC, enter settings and perform the scanning Refer to the Instruction Manual for Scan Master.

  • Page 22: Display And Functions

    3 Overview of Scanning 3.2 Display and Functions The following are examples of the displays and its functions. Display STATION MENU Main Menu F1 NEW STATION Sub Menu F2 SELECT STATION F3 OCC/BS SETTING Display Function Main Menu Menu Set a new station. NEW STATION Refer to Chapter 7.1 “Creating a New Station”.

  • Page 23: Screen Flowchart

    3 Overview of Scanning 3.3 Screen Flowchart Press the power key STATION MENU SELECT MENU F1 NEW STATION F1 STATION MENU First page F2 SELECT STATION F2 SCAN MENU F3 OCC/BS SETTING P1/2 ↓ SCAN MENU F1 3D SCANNING F2 TARGET SCANNING SELECT MENU PROJECT MENU F1 PROJECT MENU...

  • Page 24: Preparation For Measurement

    4 PREPARATION FOR MEASUREMENT PREPARATION FOR MEASUREMENT When attaching the instrument on a tripod, first attach only the tribrach on the tripod, then attach the instrument after leveling and centering. 4.1 Detach/Attach of Tribrach The instrument is easily detached or attached to the tribrach. Tribrach alignment groove Tribrach fixing screw Tribrach fixing lever...

  • Page 25: Mount The Instrument To The Tripod

    Level and center the instrument precisely to insure the best performance. Use tripods with a tripod screw of 5/8 in. diameter and 11 threads per inch, such as the Type E TOPCON wide-frame wooden tripod. Do not use a metallic tripod. 4.2.1 Leveling and Centering the Instrument Setting up the Tripod 1) First, extend the extension legs to suitable lengths and tighten the screws on their midsections.
  • Page 26 4 PREPARATION FOR MEASUREMENT Mounting the instrument on the tribrach 1) Mount the instrument on the tribrach and tighten the tribrach fixing lever and the tribrach fixing screw. Refer to Chapter 4.1 “Detach/Attach of Tribrach”. Leveling the instrument using the circular level on the instrument 1) Level the instrument as in procedure 2 using the circular level on the instrument.
  • Page 27 4 PREPARATION FOR MEASUREMENT 3) Use the horizontal jog to turn the instrument as shown in the figure. Make the collimating window parallel to the line connecting the leveling screws A and B of the tribrach (or make a random choice of any two).
  • Page 28 4 PREPARATION FOR MEASUREMENT 6) Use the horizontal jog to make sure the X and Y inclinations are ±6' or less (within the calibration range of the tilt sensor), regardless of the direction the collimating window faces. NOTE: TILT SETTING [ON] Since the level may change slightly while X :+0°00'08"...

  • Page 29: Power Switch Key On

    4 PREPARATION FOR MEASUREMENT 4.3 Power Switch Key ON Press the power key. TOPCON LASER SCANNER It takes 3 minutes after the power has been TOPCON LASER SCANNER switched ON to initialize the instrument and Version 1.00 warm up the laser.

  • Page 30: Battery Power Remaining Display

    4 PREPARATION FOR MEASUREMENT 4.4 Battery Power Remaining Display Battery power remaining display indicates the power condition. Measurement is possible. The power is poor. Please replace with fully charged batteries. Measurement is impossible.Please replace with fully charged batteries. Note: 1 The battery operating time will vary depending on the environmental conditions such as ambient temperature, charging time, the number of times of charging and discharging etc.

  • Page 31: How To Collimate To A Target

    4 PREPARATION FOR MEASUREMENT 4.6 How to Collimate to a Target. From the collimating window, use the vertical and horizontal jogs to set the sighting collimator approximately on the target. Look into the sighting collimator. Vertical jog Horizontal jog Sighting collimator Collimating window Collimate from here Use the vertical and horizontal jogs to adjust the peak of the triangle inside the sighting collimator to...

  • Page 32: How To Enter Alphanumeric Characters

    4 PREPARATION FOR MEASUREMENT 4.7 How to Enter Alphanumeric Characters When entering the station, instrument height, backpoint, etc., you can enter alphanumeric (small letters) characters. Alphanumeric characters key Cursor key Soft key OCC/BS SETTING The Soft Key message is displayed at the bottom line INPUT OCC NAME of display.
  • Page 33 4 PREPARATION FOR MEASUREMENT [Example setting] Occupied point name [a-1] Operating procedure Operation Display SELECT MENU F1 STATION MENU F2 SCAN MENU P1/2 DOWN [F1] Press the [F1](STATION MENU) key. STATION MENU F1 NEW STATION F2 SELECT STATION F3 OCC/BS SETTING Press the [F3](OCC/BS SETTING) key.

  • Page 34: Target

    4 PREPARATION FOR MEASUREMENT 4.8 Target 4.8.1 Selecting the Target Sheet Select the target sheet (large, medium, small) based on the distance to the object being scanned. (Target sheet (large) is sold separately) Distance to the object Target sheet being scanned (m) Large 50-200 Middle...

  • Page 35: Instrument Settings

    5 Instrument Settings Instrument Settings 5.1 Settings by the Star Key Items to be set by the star key Display Function TILT SETTING Set the tilt sensor ON/OFF. Choose the best optical zoom system setting for the scanning. ZOOM CONTROL Set the image quality mode of the camera.

  • Page 36: Tilt Setting

    5 Instrument Settings 5.1.2 Tilt Setting When the auto tilt correction function of the vertical and horizontal angles is turned ON, the 2-axis tilt sensor is activated, and tilts in vertical and horizontal angles due to inclination of the standing axis will be corrected automatically.

  • Page 37: Camera Setting

    5 Instrument Settings 5.1.4 Camera Setting When scanning, the internal camera automatically takes pictures of the entire scanning area, and keeps the data in the image file (if [SCAN+IMG] or [IMAGE] has been selected. Refer to Chapter 8.2.2 “Setting the Scanning Density”.) Several photographs are taken in order to cover the entire scanning area.

  • Page 38: Using The Setting Menu

    5 Instrument Settings 5.2 Using the Setting Menu Selection items in the setting menu Display Function NETWORK SETTING Set the network. DATA MANAGE Edit the data on the SD card. TEMP.&PRES. SET Set the temperature and air pressure. LAST CALIB. DATE Display the date of the last calibration.

  • Page 39: Network Settings (When The Instrument Is Used Connected To A Pc)

    5 Instrument Settings 5.2.2 Network Settings (when the instrument is used connected to a PC) You can connect the instrument to a PC either using a wireless LAN connection with a wireless LAN card, or through a USB cable. Here we describe how to select one of the connections, and connect via wireless LAN.
  • Page 40 5 Instrument Settings Press the [F2](EDIT) key to edit IP address. NETWORK SETTING [F2] INPUT IP ADDRESS <- Input IP address [192.168.0.1]. NETWORK SETTING Input INPUT IP ADDRESS address [192.168.0.1 <- Press the [ENT] key. NETWORK SETTING [ENT] Press the [F4] key and move the curser to [F4] IP:192.168.0.1 SUBNET.

  • Page 41: Editing The Sd Card Data (Data Management)

    5 Instrument Settings PC settings (for Windows XP) Following are the procedures to set the IP address, subnet address, and SSID on the PC. Click [Start] → [Control Panel] → [Network Connections] → [Wireless Network Connection] Right-click [Wireless Network Connection] and select [Properties]. [Wireless Network Connection Properties] will be displayed.
  • Page 42 5 Instrument Settings Data structure in an SD card SD card data is saved under the following directory structure. An object should be 3D scanned several times from multiple positions, and the results should be kept together as a single project. Project1 3D Scan1 3D Scan3...
  • Page 43 5 Instrument Settings Renaming folders Refer to the below when deleting or renaming folders [Example] Rename station [st-1] --> [st-9] Operating procedure Operation Display SELECT MENU F1 STATION MENU F2 SCAN MENU P1/2 ↓ Press the [F3]( )key to display the second page of ↓...

  • Page 44: Setting The Temperature And Atmospheric Pressure

    5 Instrument Settings 5.2.4 Setting the Temperature and Atmospheric Pressure In order to calibrate the scanning data, enter the temperature and atmospheric pressure at the time of scanning. Setting range Temperature : -10°C to +50°C (0.1°C step) (Factory preset: +20°C) : -14°F to +122°F (0.1°F step) (Factory preset: 1013.3hPa) Pressure...

  • Page 45: Displaying The Last Calibration Date And Time

    5 Instrument Settings 5.2.5 Displaying the Last Calibration Date and Time The GLS-1000 can display the date and time of the last calibration (precision calibration of scanning distance and scanning angle). It is recommended that precision calibration be performed within one year after the last calibration. Operating procedure Operation Display...

  • Page 46: Changing The Units

    5 Instrument Settings Press the [F1](TIME ADJUST) key. TIME ADJUST [F1] DATE 2007/12/24 → TIME 22:00 EDIT ↓ Press the [F2](EDIT) key. TIME ADJUST [F2] Press the [F3] (<-) key to move the curser. [F3] INPUT DATE [20080101] Input date.(20080101) Input date NUME <-...

  • Page 47: Adjusting The Tilt Sensor Installation Error

    5 Instrument Settings Press the [F3]( ) key twice to turn to the menu ↓ SETTING MENU [F3] page P3/3. [F3] F1 TIME ADJUST F2 UNIT SET P3/4 ↑ Press the [F2](UNIT SET) key. UNIT SET [F2] →TEMP.&PRES ANGLE P1/2 EDIT ↑...
  • Page 48 5 Instrument Settings Press the [F1](TILT 0 ADJUST) key. TILT 0 ADJUST [F1] X :+0°00'25" Turn the leveling screw to level the unit to within Y :+0°00'20" 30". START Press the [F4](START) key. TILT 0 ADJUST [F4] Begin the calibration of tilt sensor 0 datum. PROCESSING..

  • Page 49: Project Settings

    6 Project Settings Project Settings The GLS-1000 scans an object from several directions. All the scanned data are managed and stored as one project. The station information of each scanning is stored inside the same project. Create a new project when you scan a new object. If you continue scanning for the same project or control the existing data, select from the existing projects.

  • Page 50: Creating A New Project

    6 Project Settings Project data is saved on the SD card. Project1 (Directory) Project information file (.prj) Station1 (Directory) Station information file (sta file format) Point cloud file of back sight (clt file format) 3D coordinate of back sight (trg file format) Camera orientation/calibration data (binEXT file format) Tilt orientation file e.g) 0001.tor,0002.tor 3D Scan1 (Directory)

  • Page 51: Selecting From Existing Projects

    6 Project Settings Input project name [p03]. NEW PROJECT Input project INPUT PROJECT NAME name [p03 NUME <- Press the [ENT] key. PROJECT MENU [ENT] Project "p03" is set. F1 NEW PROJECT F2 SELECT PROJECT 6.2 Selecting from Existing Projects [Example] Select project name: p02 Operating procedure Operation...

  • Page 52: Station Setting

    7 Station Setting Station Setting Data related to the scanning (occupied point name, backsight point name, target data, 3D data, etc.) are stored in the station. Create a new station when moving to another station to scan the object. To continue scanning from the same station, or to control existing data, select from the existing stations. Station1 Backpoint1 Station1...

  • Page 53: Creating A New Station

    7 Station Setting Station menu operation SELECT MENU F1 STATION MENU F2 SCAN MENU P1/2 ↓ STATION MENU NEW STATION F1 NEW STATION INPUT STATION NAME F2 SELECT STATION F3 OCC/BS SETTING NUME <- SELECT STATION → st-1 st-2 SELECT ↑...

  • Page 54: Selecting From Existing Stations

    7 Station Setting 7.2 Selecting from Existing Stations [Example] Select station name: st-2 Operating procedure Operation Display SELECT MENU F1 STATION MENU F2 SCAN MENU P1/2 ↓ [F1] Press the [F1](STATION MENU) key to select the STATION MENU station menu. F1 NEW STATION F2 SELECT STATION F3 OCC/BS SETTING...

  • Page 55: Setting The Occupied Point Name And The Backsight Point Name

    Start the target scanning, and record the backsight point data. The only target you can use is Topcon target sheets. The target sheet to use differs depending on the scanning distance. Refer to Chapter 4.8.1 “Selecting the Target Sheet”.
  • Page 56 7 Station Setting Input backsight point name [b-1]. OCC/BS SETTING Input backsight INPUT BS NAME point name [b-1 ALPH <- Press the [ENT] key. OCC/BS SETTING [ENT] AREA SELECT AIM TO TARGET AND PRESS ENT KEY Collimate to the center of backpoint target by Collimate to using Horizontal/Vertical jog.
  • Page 57 7 Station Setting *2) If the scan result exceeds the following conditions, the screen below will be displayed. Under unfavorable weather conditions or when scanning is interrupted, deviation may become large. Select OK, NG or RETRY depending on the precision you are seeking. Angle deviation (deviation of measured angle) : 10"...

  • Page 58: Scanning

    8 Scanning Scanning There are two types of scanning: target scanning, which measures only the target and 3-D scanning, which obtains 3-D data. Scanning data is kept in the Station folder on the SD card. Project1 (Directory) Project information file (.prj) Station1 (Directory) Station information file (sta file format) Point cloud file of back sight (clt file format)

  • Page 59: Target Scanning

    Place the target on or near the scanning object, and perform the scanning. The only target you can use is Topcon target sheets. In order to coordinate positional information of the data, scanning data on 3 or more targets is needed.
  • Page 60 8 Scanning Input target name [pt01]. TARGET SCANNING Input target TARGET NAME INPUT name [pt01 NUME <- Press the [ENT] key. TARGET SCANNING [ENT] AREA SELECT AIM TO TARGET AND PRESS ENT KEY Aim to a target [pt01] by using Horizontal/Vertical TARGET SCANNING Aim to jog.
  • Page 61 8 Scanning 4 - 9 Repeat step to scan target name [pt03]. *1) If the instrument is tilted 10' or more, the screen shown below will be displayed. TILT OVER PRESS ENT KEY After leveling the instrument, press the [ENT] key. TARGET SCANNING SCAN START PRESS ENT KEY...

  • Page 62: Scanning

    8 Scanning 8.2 3D Scanning 3D scanning obtains 3D data of the scanning object. To start 3D scanning, determine the scanning area, and set the various settings related to the scanning. If target scanning data is to be used, make sure the scanning area includes the common targets. 8.2.1 Scanning Area To determine the scanning area, collimate the upper left corner and lower right corner of the area to be scanned.

  • Page 63: Performing 3D Scanning

    8 Scanning 8.2.3 Performing 3D Scanning Example: SCAN DEGREE H:0.1°, SCAN DEGREE V:0.1°, SCAN NAME:hill Operating procedure Operation Display SELECT MENU [Setting the scanning area] F1 STATION MENU F2 SCAN MENU P1/2 ↓ Press the [F2](SCAN MENU) key to select the SCAN MENU [F2] scan menu.
  • Page 64 8 Scanning Input horizontal scan degree [0.1]. 3D SCANNING Input Input unit is degrees. horizontal INPUT SCAN DEGREE H scan [0.1 degree <- Press the [ENT] key. 3D SCANNING [ENT] →SCAN DEGREE H[0.1] SCAN DEGREE V[0.3] UNIT EDIT ↑ ↓ Select SCAN DEGREE V by pressing [F3]( ) or ↑...
  • Page 65 8 Scanning [Starting 3D scanning] 3D SCANNING [F4] Press the [ENT] key. SCANNING START PRESS ENT KEY If the displayed scanning information is correct, 3D SCANNING [ENT] press the ENTER key. SCANNING IN PROGRESS REMAIN 10M 30S PAUSE STOP Scanning starts. REMAIN: remaining time of the scan [F2]PAUSE: Scanning paused.

  • Page 66: Charging The Internal Power Source (Bt-65Q)

    9 Charging the Internal Power Source (BT-65Q) Charging the Internal Power Source (BT-65Q) • To charge Connect the AC/DC converter and AC-Cable to the charger. *1) Plug the AC-Plug into the outlet. (The Power LED will light.) Attach the battery in the charger. Charging will start. (The Charge LED will Orange.) Charging will take approximately 5 hours per discharged battery.
  • Page 67 9 Charging the Internal Power Source (BT-65Q) • Do not charge continuously, otherwise the battery and the charger may be deteriorated. If charging is necessary, use the charger after stopping charge for approximately 30 minutes. • Do not charge the battery in right after the battery is charged, it causes deterioration of the battery in rare cases.

  • Page 68: Precautions

    10 PRECAUTIONS PRECAUTIONS 1) For cleaning the instrument after use, remove dust using a cleaning brush, then wipe off with a cloth. 2) For cleaning the window surface, use a cleaning brush to remove the dust, then use a clean lintless cotton cloth.

  • Page 69: Special Accessories

    11 SPECIAL ACCESSORIES SPECIAL ACCESSORIES Target board (Large, Small) Power cord PC-21 Place the target sheet(magnet type) and attach to Connect to an external power source (12V, the prism holder. commercially available) Target sheet [Large, Middle, Small] Target sheet(Magnet type) [Large, Middle, Small] Special target sheets for the GLS-1000.

  • Page 70: Error Displays

    12 ERROR DISPLAYS ERROR DISPLAYS Message code Description Countermeasures Unable to scan or photograph. Long-push the power key and restart. If long-pushing the power An error occurred in the battery BATTERY CTRL ERROR key does not work, remove the control. internal and external batteries and restart.
  • Page 71 MEASUREMENT FAILED PLEASE START OVER center measurement. again. If correction is still not seen, adjustment will be required. If error still persist after attempting to clear them, contact your local Topcon dealer or Topcon head office. 12-2...

  • Page 72: Specifications

    13 SPECIFICATIONS SPECIFICATIONS General specification Dimensions Instrument : 240 (D)x240 (W)x566 (H) mm carrying case : 760x540x380 mm (excluding casters) Weight Instrument : 16kg (without battery, tribrach) carrying case : 8.5kg (excluding casters) Instrument height : 410mm (from the attaching surface of the tribrach to the center of the rotating mirror) Input voltageInternal battery : 7.4V...
  • Page 73 13 SPECIFICATIONS Level Shape : Circular type Sensitivity : 10'/2mm Plummet Magnification : 2.2x Focusing : Fixed type :1.4m (Using range 0.7-1.8m) Image : Erect Field of view : 5° On-Board Battery(BT-65Q) Capacity : 5000mAh Voltage : 7.4V Weight : 0.2kg Operating time(+20°C) : 4h/4pcs *1) (Continuous scanning use) *1) Operating time depends on the ambient temperature, and the instrument's condition of use.
  • Page 74 EMC NOTICE ©2008 TOPCON CORPORATION ALL RIGHTS RESERVED...
  • Page 76 7400 National Drive, Livermore, CA 94551, U.S.A. Topcon House Kennet Side, Bone Lane, Newbury, Berkshire RG14 5PX U.K. Phone: 925-245-8300 Fax: 925-245-8599 www.Topconpositioning.com Phone: 44-1635-551120 Fax: 44-1635-551170 survey.sales@topcon.co.uk laser.sales@topcon.co.uk 3380 Industrial Blvd, Suite 105, West Sacramento, CA 95691, U.S.A. Phone: 916-374-8575 Fax: 916-374-8329 Blk 192 Pandan Loop, #07-01 Pantech Industrial Complex, Singapore 128381 Phone: 65-6778-3456 Fax: 65-6773-6550 www.topcon.com.sg...

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