Digital Theodolite Ruide ET-02 ET-05 ET-10

ET-02/ ET-02L ET-05/ ET-05L ET-10 TELESCOPE image erect magnification 30X effective aperture 45mm resovling power 3? field of view 1 30? minimum focusing distance 1.0m stadia ratio 100 stadia constant tube length 149mm ANGLE MEASUREMENT reading system absolute encoding diameter of circle ( VHz) 79mm minimum reading 1? / 5? / 10? selectable 10? accuracy 2? 5? 10? detection method: hor. ver. dual dual dual dual dual dual DISPLAY ( LCD) display type 2 sides MEMORY internal memory capacity for 256 pairs of H. & V. angle LEVEL SENSITIVITY plate vial 30? / 2mm circular vial 10? / 2mm COMPENSATION system liquid-electric detection plate vial working range 3? accuracy 1? OPTICAL PLUMMET image erect magnification 3X focusing range 0.5m ~  field of view 5 PHISICAL CHARACTERISTICS laser pointer ET-02L: yes ET-05L: yes NO operating temperature -20 ~ 45 water proof IP66 internal power supply Rechargeable Ni-H battery / AA battery voltage 6VDC operating time 10 hours/ 20 hours ( battery pack) dimension L145 X H318 X W179mm