ET2A is a high precision electronic theodolite. This device has 2 "angle measurement accuracy and 30x magnification effect to meet various of working requirement.
1. 30x Telescope Magnification
2. 2" Angle measurement accuracy
3. Compensator up to 3'
4. Two sides LCD display
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″
DC 3.3 V
Working Temperature
- 10 °～+ 45 °
Others
Storage Temperature
Dimension
180 x 166 x 355 m
Weight
5 Kg
