ET2A

Theodolite

ET2A is a high precision electronic theodolite. This device has 2 "angle measurement accuracy and 30x magnification effect to meet various of working requirement.

Specifications 

Angle Measurement
Measuring Method	Absolute encoder
Diameter	79mm
Min. Reading	1″, 5″,10″
Measuring Unit	360°，400gon
Vertical Angle 0°	Zenith 0 °, Horizontal 0 °
Accuracy	2 ″
Telescope
Image	Erect
Magnification	30x
Effective Aperture	47mm
Resolving power	3.75″
Field of View	1°30″(26mm/1000m）
Min. Focus	1.5 m
Stadia Ratio	100
Tube Length	169mm
Compensator
Electronic Tilt Sensor	Vertical compensation
Compensator Range	±3′
Resolving Power	6 ″

Vial
Plate Vial	30″/2mm
Circular Vial	8 ′/2mm
Display
Type	Two sides LCD
Onboard battery
Power Resource	Rechargeable Li-on battery
Voltage	DC 7.4 V
Operation Time	BDC 1600 mAh (About 20 hours)
Laser
Length of the Wave	635 nm
Power	10 mW
Effective Range	250 m
Position Error	≤5″
Voltage	DC 3.3 V
Working Temperature	- 10 °～+ 45 °
Others
Storage Temperature	- 10 °～+ 45 °
Dimension	180 x 166 x 355 m
Weight	5 Kg