total station

total stationTelescope Image Erect Magnification 30× Effective aperture 45mm (EDM 47mm) Resolving power 3 Field of view1°30 Minimum focus 1.3m Stadia ratio 100 Sight distance precision ≤.0.4%D Tube length 152mm Angle Measurement Measuring method Photoelectric detection by incremental encode Dia of circle (vertical, horizontal) 79mm Minimum reading 1/5 Selectable Detection method Horizontal: Dual Vertical: Dual Measuring unit 360°/400gon/6400mil Selectable Vertical angle° Zenith°/Horizontal° Selectable Accuracy NTS312 2second NTS315 5second Distance Measurement Single prism (under fair weather condition) NTS312 1.8 km NTS315 1.0 km Triple prism (under fair weather condition) NTS312 2.6 km NTS315 1.6 km Display Type LCD, Six lines, digital Data Communication PortRS-232C , USB On-board Battery Power resource Rechargeable Ni-H battery NB-28 Voltage DC6V Continuous operation time 5--6 hrs Operation Environment Operating temperature -20° +45 Size & weight Dimension 160×150×340