DE2A Electronic Digital Theodolite | 2" Precise Surveying

Surveying & Engineering Instruments

DE2A Electronic Digital Theodolite

Keywords: digital theodolite, electronic theodolite, surveying instrument, 2 second theodolite, construction theodolite

High-precision 2" electronic digital theodolite engineered for fast, reliable angle measurement on construction and surveying sites.

The DE2A Electronic Digital Theodolite combines a 30× erect-image telescope, an absolute-encoder angle reading system, and a single-axis liquid-electric tilt compensator to deliver 2" (0.6 mgon) angular accuracy in a compact, lightweight body. Dual LCD displays and a 10-key pad let operators read and record horizontal and vertical angles directly at the instrument.

With hot-swappable Ni-H power, switchable angle units (deg / mil / gon / v%), and an optional coaxial red/green laser pointer, the DE2A adapts to layout, staking-out, and alignment tasks across general construction and land-survey workflows.

Key Features

1.  2" Angular Accuracy — absolute-encoder reading system delivers precise horizontal and vertical angle measurement for demanding construction jobs.

2.  Dual LCD Displays — front and back screens show readings simultaneously, improving efficiency for single-operator work.

3.  30× Erect-Image Telescope — clear, upright viewing with 1°30' field of view and 47 mm objective for sharp long-distance sighting.

4.  Single-Axis Tilt Compensation — liquid-electric vertical compensator with ±3' range and 6" resolving power keeps readings stable on uneven ground.

5.  Multi-Unit Angle Display — switch freely between degrees, mil, gon, and v% to match local survey standards.

6.  Hot-Swappable Power — Ni-H battery (1600 mAh, ~10 h) with 6 V output; swap without powering down the instrument.

7.  Optional Laser Pointer — coaxial red/green laser for quick aiming and alignment reference.

How to Use

1.  Set Up — mount the theodolite on a tripod via the tribrach, level it using the circular and tubular vials, and center over the station point with the internal laser plummet.

2.  Sight the Target — aim the 30× telescope at the backsight/foresight, focus, and tighten the tangent clamps for fine adjustment.

3.  Read & Record — read horizontal and vertical angles on the dual LCDs; switch units (deg / mil / gon / v%) as needed.

4.  Compensate — the single-axis tilt sensor automatically corrects within ±3' so readings stay accurate on slightly uneven ground.

Technical Specifications

Angular Accuracy	2" (0.6 mgon)
Reading System	Absolute encoder
Angle Units	Deg / mil / gon / v%
Minimum Increment	1.0" (0.2 mgon)
Circle Diameter	74 mm (2.9 in)
Telescope Magnification	30×
Image	Erect
Field of View	1°30'
Objective Diameter	47 mm (1.85 in)
Minimum Focus	1.5 m (4.9 ft)
Reticle	Crosshair (stadia ratio 100/0)
Laser Pointer	Optional coaxial red / green
Tilt Sensor	Single-axis, liquid-electric, ±3' range, 6" resolving
Battery	Ni-H 1600 mAh, ~10 h, 6 V output
Internal Plummet	Class 2 laser (1.5 mm @ 1.5 m)
Dimensions	180 × 166 × 355 mm (7.0 × 6.5 × 13.9 in)

Applications

1.  Construction layout, building corner setting, and foundation staking.

2.  Land surveying, boundary marking, and topographic control.

3.  Road, pipeline, and utility alignment and grade checking.

4.  Machine and structural installation alignment.

Spare Parts

Optional accessories for the DE2A theodolite include tribrach, optical prism, aluminum tripod, rechargeable Ni-H battery pack, battery charger, carrying case, and tool kit. Contact us to configure the accessory set that fits your workflow.