Laser Plummet (Optional) With laser plummet, moving station is no more an annoying matter NTS-362R Telescope: Image Erect Magnification 30× Effective aperture Telescope:45mm(EDM:50mm) Resolving power 3″ Field of view 1°30′ Minimum focus 1m Tube length 154mm Angle Measurement Measuring method absolute encode Dia of circle(vertical, horizontal) 79mm Minimum reading 1″ 5″Selectable Detection method Horizontal: Dual Vertical: Dual Accuracy 2″ Distance Measurement: Max. Range single prism 5km Reflectorless 300m(object in shade,or sky overcast) Displaly Max:99999999.9999m Min:0.1mm Unit m/ft Accuracy Reflectorless Fine ±(5mm+2ppm@D) Tracking ±(10mm+2ppm@D) Reflector Fine ±(2mm+2ppm@D) Tracking ±(5mm+2ppm@D) IR sheet ±(5mm+2ppm@D) measuring time reflectorless Fine mode:<1.2S; Tracking mode:<0.5s reflector Fine mode:<1.2S;Tracking mode:<0.5s;IR sheet mode:<1.2S Atmospheric correction Auto correction ,manual input Atmosphericrefraction and earth curvature correction Auto correction ,manual input prism constant correction Auto correction ,manual input Vial Plate vial 30″/ 2mm Circular vial 10′/2mm Auto Vertical Compensator Type Dual axis Liquid-electric Compensation range ±3′ Accuracy 3″ Optical Plumment Image Erect Magnification 3× Focusing range 0.5m~∝ Field of view 5″ On-board Battery type Ni-H ,Rechargeable Voltage DC 6V Continuous operation time 8 hrs Others Display LCD, 6 lines , digital Data Communication RS-232C,USB,SD Operating temperature -20°~+45ºC Dimension 160×150×330mm,5.2kg