Specifications :
General<o:p>
Weight: 10.8 lbs (4.9 kg)<o:p>
Dimensions :7.2 in x 6.8 in x 13.2 in (18.4 cm x 17.2 cm x 33.6 cm)<o:p>
Protection Class: IP54 (protected against dust and water splashes)<o:p>
Internal Memory: 24,000 points<o:p>
<o:p>
Angle Measurement<o:p>
Measuring Method/Reading System: Absolute encoder<o:p>
Detection Method : Horizontal:double, Vertical:single<o:p>
Minimum Reading:1-second/5-second<o:p>
Accuracy: GTS252:2Second; GTS255: 5-Second<o:p>
Diameter of Circle: 71 mm<o:p>
<o:p>
Distance Measurement<o:p>
Unit of Measure (distance display) :m/ft<o:p>
EDM Accuracy (Precision): ±(2mm + 2ppm x D)<o:p>
Minimum Reading: 900 m (3,000 ft)<o:p>
<o:p>
Tilt Sensor/Compensator<o:p>
Range ± 3<o:p>
Type: Automatic vertical and horizontal<o:p>
Method: Liquid surface reflective profile sensor reading<o:p>
Setting Accuracy: 1 arcsec<o:p>
<o:p>
Battery/Power<o:p>
Power Source: Rechargeable Ni-MH battery<o:p>
Battery Life: 9 hours<o:p>
Battery Life Alert: yes<o:p>
Voltage: 7.2V<o:p>
<o:p>
Optical Plummet<o:p>
Image: Erect<o:p>
Magnification :3x<o:p>
Field of View: 5 degrees<o:p>
Focus Range: 0.5 m to infinity<o:p>
<o:p>
Level<o:p>
Plate/Tubular Bubble Vial: 30 seconds per division/(2 mm)<o:p>
Circular Bubble Vial: 10 minutes per division/(2 mm)<o:p>
<o:p>
Telescope<o:p>
Length of Tube: 150 mm<o:p>
Image: Erect<o:p>
Diameter of Objective Lens (Aperture): 1.77 in (45mm) EDM: 1.97 in (50 mm)<o:p>
Magnification: 30x<o:p>
Field of View :1 degree 30 arcmin<o:p>
Resolving Power: 3.0 arcsec<o:p>
Minimum Focus Distance: 1.3 m (4.2 ft)<o:p>
Reticle Illumination: Provided<o:p>
<o:p>
Display and Keypad<o:p>
Type :2 screen, dot matrix graphic LCD display<o:p>
Keys: Alphanumeric<o:p>
Backlight: yes<o:p>
<o:p>
Temperature<o:p>
Operating -4Fº~122ºF (-20ºC~50ºC)<o:p>
<o:p>
Applications<o:p>
Surveying and Construction: yes<o:p>
Mapping and GIS (geographic information systems): yes<o:p>
Utilities: yes<o:p>
Environment Studies: yes<o:p>
Geomarking: yes<o:p>
Archaeology: yes<o:p>
Accident Reconstruction: yes<o:p>
<o:p>
Measurement Range (under fair weather conditions)<o:p>
Single Prism: 2,300 m (7,500 ft)<o:p>
Triple Prism: 3,100 m (10,200 ft)<o:p>
Mini Prism: 900 m (3,000 ft)<o:p>
<o:p>
Functions<o:p>
Coordinate Measurement Point:yes<o:p>
Angle and Distance Stake Out: yes<o:p>
Stake Out Line: yes<o:p>
Offsets: yes<o:p>
Missing Line: yes<o:p>
Remote Elevation: yes<o:p>
Resection: yes<o:p>
Area Calculation: yes<o:p>
<o:p>
Measurement Time<o:p>
Fine 1 mm: 1.2 seconds (Initial 4 seconds); 0.2 mm: 2.8 seconds (Initial 5 seconds)<o:p>
Tracking 0.4 seconds (Initial 3 seconds)<o:p>
<o:p>
Interface<o:p>
Pin Port 9-pin (RS-232C)<o:p>
Standard Accessories<o:p>
Main unit Battery Battery Charger Lens cap<o:p>
Tool kit with case Plastic rain cover Silicon cloth<o:p>
Carrying Case