The DT400 series electronic theodolites are widely used in the third and fourth order trigonometric control surveys for national and urban areas. They are employed in engineering surveys for railways, highways, bridges, water conservancy, and mining, as well as for the installation of buildings and large equipment. They are also applied in cadastral surveys, topographic surveys, and various types of engineering surveys.

Product Features
Large-screen LCD display for easy reading and user-friendly operation.  
● Electronic compensator;
● Can measure the same angle multiple times to calculate the average, improving accuracy and reducing the number of records.
● Conveniently connect to external tablets.
● Laser dot and pointer switches can be operated through the panel.

Technical Specifications

Angle Measurement

Minimum Reading  1"

Accuracy: 2"

Telescope

Objective Aperture: 45mm

Magnification Ratio 30×

Imaging        Normal Imaging

Field of View: 1°30'

*Short Distance 1.0m

Display

Screen Display           Double-Sided

Lighting              Available

Compensator

Inclination Sensor    Automatic Vertical Compensation

Compensation Range ±3′

Level Gauge

Long Level Gauge 30" / 2mm

Circular Level 8′/2mm

Power Supply

Rechargeable Nickel-Metal Hydride Battery, 6V
Battery Runtime: 15h

Others

Pointing Tool DT402 (Optical Pointer) / DT402L (Laser Pointer)

Data Interface            RS-232C

Instrument Dimensions: 153×175×328 mm

Operating Temperature: -20℃ to +50℃

Instrument Weight: 4.0 kg