Digital Theodolite South ET-20/ET-20L

Electronic Digital Theodolite ET-20/ET-20L Telescope Image : Erect Magnification : 30 X Effective aperture : 45mm Resloving power : 3" Fiel of view : 1"30' Minimum Focusing Distance : 1.4m Stadia constant : 0 Tube leight : 157m Anggle Mensurement Reading system : Photoelectrick detection by incremental enconder Diameter of circle (VHz) : 79mm Minimum reading : 10" / 20" (selectable) Accuracy : 5" Horizontal angle : Dual Vertical angle : Single Display (LCD) Display type : 2 sides, segment LCD in two lines Data OUTPUT Data I/O : RS-232C Level Sensitivity Plate level : 30"/2mm (30"per 2mm) Circular level : 8'/2mm (8' per 2mm) Auto Vertical Compensator System : Liquid-electric detention/plate level selectable Working range : ?' Accuracy : 1" (Liquid-electronic detention) 30"/2mm (plate level) Optical Plumment Telescope Image : Erect Magnification : 3X Focusing range : 0.5m- Fiel of view : 5 Physical Characteristics Operating temperature : -20? - +45? Internal power supply : Rechageable Ni-H battry/AA battery Voltage : 6VDC Operating time : 10 hours Dimension : L 145 x H 318 x W 179mm Weight : 5.2Kg