• Features
  • Specifications


    Fast and Powerful Reflector less EDM

    • Fast and accurate pinpointing with phase shift technology.

    • Fast distance measurement of 0.9s regardless of object.

    • Minimum reflector less measuring distance - just 30cm.

    • Improved collimation with super-bright pointer.

    • Smaller EDM beam spot size for minimal distance

    Measuring error.

    • Dependable measuring even at shallow incidence angles.

    • Ensures accurate reflective sheet distance measurement.



    Japan Quality Products

    We perform the tough environmental tests to ensure long-term operation even under the rough site environments.

    GM-55 is thoroughly inspected with dust-proof and water-proof test chambers.

    In addition, the various tests against vibration, drop, temperature, and humidity were successfully passed to achieve the best environmental spec. Also, the measuring distance accuracy test on base line and the instrument leveling and angle accuracy test and adjustment by collimator system ensure your satisfaction on GM Series product quality.


    Standard Package Components

    Main unit • Battery (BDC46C)

    • Battery charger (CDC68A)

    • Power Cable • Lens cap • Lens hood • Tool pouch • Precision Screwdriver

    • Lens brush • Hexagonal wrench ×2

    • Cleaning cloth • Quick Manual

    • Laser caution sign-board

    • Carrying case • Carrying strap     IVBIA



     High Quality, High Return!

     • Construction and Survey Application Software

    • Fast & Accurate & Powerful Measuring Distance Feature

    • 500m Long Range Reflectors Measurement

    • Rugged & Waterproof Design

    • Reliable Large Volume Internal Memory


Model GM-55
Magnification / Resolving power 30x / 2.5"
Others Length : 171mm (6.7in.), Objective aperture : 45mm (1.8in.) (48mm (1.9in.) for EDM), Image: Erect, Field of view: 1°30' (26m/1,000m), Minimum focus: 1.3m (4.3ft.) Reticle illumination: 5 brightness levels
Angle measurement
Minimum Display 1”/5” (0.0002 / 0.001gon, 0.005 / 0.02mil)
Accuracy (ISO 17123-3:2001) 5"
Dual-axis compensator / Dual-axis liquid tilt sensor, working range: ±6'
Collimation compensation On/Off (selectable)
Distance measurement
Laser output*1 Reflectorless mode : Class 3R / Prism/sheet mode : Class 1
Minimum Display Fine / Rapid : 0.0001m (0.001ft. / 1/16 in.) / 0.001m (0.005ft. / 1/8 in.) (selectable) Tracking / Road : 0.001m (0.005ft. / 1/8 in.) / 0.01m (0.02ft. / 1/2 in.) (selectable)
OS, Interface and Data management
Operating system Linux
Display / Keyboard Graphic LCD, 192 x 80 dots, backlight : on/off (Selectable) / Alphanumeric keyboard / 28 keys with backlight
Control panel location Serial RS-232C, USB2.0 (Type A for USB flash memory)
Laser-pointer Coaxial red laser using EDM beam
Dust and water protection / Operating temperature IP66 (IEC 60529:2001) / -20 to +60ºC (-4 to +140ºF)
Size with handle 183(W)x 174(D)x 348(H)mm (On single face)
Instrument height 192.5mm from tribrach mounting surface
Weight with battery & tribrach Approx. 5.1kg (11.3lb)
Power Supply
Battery Li-ion rechargeable battery BDC46C
Operating time (20ºC)*9 Approx. 14hours*10
Application program
On board • REM Measurement • 3D Coordinate Measurement • Resection • Stake Out • Topography Observation • Offset Measurement • Missing Line Measurement • Intersection • Surface Area Calculation • Route Surveying • Point to Line