June 16, 2016 In Coventional Construction

High-Performance & High-Quality

• Superior Waterproof and Dustproof

• High Accuracy & Long Measuring Range

• Enhanced Absolute Encoder

• Versatile Application Functions

• Dual-Axis Tilt Sensor

Superior Waterproof and Dustproof

GTS-250 series conform to IEC Standard IP54. No worry about sudden bad weather.

Dual-axis tilt sensor

The dual-axis tilt sensor monitors inclination of both the X and Y axes, the correct horizontal and vertical angle readings automatically.

ts di lapangan


Enhanced Absolute Encoder

GTS-250 Series adopted an absolute encoder system, which doesn’t require 0 set and realizes stable measurement with less reading error.

Extra-large memory capacity for 24,000 points

GTS-250 Series store the measured data up to 24,000 points.

mini prism



Versatile Application Functions

Remote Elevation Measurement (R.E.M.)


To easily determine the height of a point where a prism cannot be placed. Take a distance to a prism placed either directly above or directly below the target point, then sight to the target point.

Missing Line Measurement (M.L.M.)


To measure horizontal distance, slope distance and height difference between two prisms.


To measure horizontal distance, slope distance and height difference between two prisms.


Magnification 30x
Resolving power 3.0″
Length : 150mm, Objective aperture : 45mm (50mm for EDM), Image : Erect, Field of View : 1°30′ (26m/1,000m), Minimum focus : 1.3m
Angle measurement
Display resolutions (selectable) 1″/5″ (0.0002/0.001 gon)
Accuracy (ISO 17123-3:2001) 5″
Method Absolute rotary encoder scanning
Detecting system                                             Horizontal 2 sides
                                                                                      Vertical 1 side
Compensator Dual-axis liquid tilt sensor, working range : ±3′, Correction unit:1″
Distance measurement
Measuring range                                              Mini prism 900m (3,000ft)
                                                                                 One prism 2,000 (6,600ft.)/Under good conditions : 2300m (7,500ft)
                                                                            Three prisms 2,700m (8,900ft.)/Under good conditions : 3,100m (10,200ft)
Accuracy (D=measuring distance in mm) ±(2mm+2ppmxD) m.s.e
Least count in measurement Fine : 1mm (0.005ft.)/0.2mm (0.001 ft), Coarse : 10mm (0.02ft)/1 mm (0.005ft.), Tracking: 10 mm (0.02ft.)
Interface and Data management
Display Graphic LCD, 160×64 dots
Keyboard Alphanumeric 24 keys
Control panel location On both faces
Data storage                                          Internal memory 24,000 points
Interface RS-232 C
Levels                                                              Circular level 10′/2mm
                                                                                Plate level 30″/2mm
Optical plummet telescope Magnification : 3x, Focusing range : 0.5m to infinity, Image : Erect
Dust and water protection (With BT-G1W) IP54 (IEC 60529)
Operating temperature -20 to +50°C (-4 to 122°F)
Size/Instrument height W184xD172xH336mm (W7.2xD6.8xH13.2in)/176mm (6.93 in.) from the tribrach dish
Weight                                    Instrument with battery 4.9 kg
                                  Plastic carrying case 3.4kg, Weght of the carrying case may be slightly different due to specific market
Power supply
Battery (BT-G1W)            Operating time (Fine mode)

Approx. 27 hours (Single distance measurement every 30 seconds at+20°C/+68°FApprox. 9 hours (Continous distance measurement at +20°C/+68°F)Battery charger                                        Recharging time1.8 hours (+10 to +40°C)

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