TOPCON DT-309G 数字经纬仪

Measures horizontal and vertical angles

9-second accuracy

2.5-inch telescope resolving power

Dual axis compensator

Compensating Range: +/- 3

Absolute encoder

Reticle illumination

Optical plummet

Detachable tribrach

RS232C serial port

Water resistant and dustproof to IP-66

Dual backlit LCD display

Up to 140-hour battery life

Easy-to-use LCD backlit display

Long-lasting Li-ion or AA battery life Powered by the Topcon BDC Li-Ion platform

Removable handle

Operating Temp: -20°C – 50°C

Storage Temp: -30°C – 60°C