NTS-332 NTS-332L/R NTS-335 NTS-335L/R Measurement Distance Maximum distance (Good weather) Single prism 3KM 5KM 3KM 5KM Without prism 400M Figures Max:999999.999 Min:1MM accuracy Prism:2+2PPM \\\\prismless5+3ppm Measurement time 1 second measurement, tracking 0.5 seconds Meteorological correction Automatically changes the input parameters Prism constant changes Automatically changes the input parameters Angle measurement Angle method Grating angle Absolute coding Grating angle Absolute coding Code disc diameter 79MM Minimum reading 1\\"/5\\" you can choose Accuracy 2\\" 5\\" Detection method Level disk: The disk diameter erect: on track Telescope Image Erect Tube length 154MM Effective aperture objective lens Telescope: 45MM Location: 50MM Magnification 30* FOV 1 ° 30 \\" Resolution 3\\" Minimum focusing distance 1M Automatic Vertical Compensator System 330L / R: biaxial, photoelectric; 330/330L/330R: uniaxial liquid electronic Scope of work +/-3\\' Accuracy 1\\" Standard device Tube spirit level 30\\"/2MM Circular level 8\\'/2MM laser devices on the Image Erect Magnification 3* Focus range 0.5M to infinity FOV 5° Display Model Double On-board battery battery Rechargeable Ni - MH battery Voltage DC 6V Continuous working time 8 hours Size and weight size 200*200*350MM weight 6.0Kg