Topcon Theodolites Digital DT-309

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  • High-accuracy (9” model) measurements - 30x Magnification
  • Ultra-rugged IP66 - Dust/Heavy rain protection
  • Compact and light weight
  • Long-lasting Topcon Li-ion or AA battery life (Up to 30 Working Days)
  • Easy-to-use large LCD backlit displays
In stock

The Topcon DT-309 you’ll be up and working fast, thanks to its simple interface and large, easy-to-see backlit LCD. There’s an optical plummet that makes set up over a control point easy, and a tilt sensor that provides ±3 minute angle correction. The DT-300 Series features a magnification of 30x, a super-short 0.9m minimum focus distance for those tight areas, and angle accuracies of 9 arc seconds.

The DT-309 Digital Theodolite features a lightweight, compact alignment and angular measurement device which boasts up to 30 workdays of power through an Alkaline or Li-ion Battery, the highest water and dust protection in its category (IP66) paired with expert convenience.

Aperture 45mm
Magnification 30x
Field of view 1°30'
Minimum Focus 1.0m
Stadia Ratio 100

Angle Measurement
Method Rotating Absolute Encoder
Minimum Reading
10" (0.002 gon/0.05 mil)/20" (0.005 gon/0.1 mil) Selectable

Optical plummet
Magnification 3x
Minimum focus 0.5m

Sensitivity of levels
Circular level 10'/2mm
Plate level 30"/2 mm

Power supply
4x AA Dry Cells or BDC71 (Optional)

Kit Components
DT-309 Digtal Theodolite
Plumb bob
Tool Kit
Waterproof Cover
Lens Cloth
Australian Calibration Certificate</p/>

  • Features a high-resolution digital display that provides clear and easy-to-read angle measurements, ensuring efficient and accurate data collection
  • Equipped with a dual-axis compensator, these theodolites automatically correct for both horizontal and vertical misalignments
  • Seamlessly connect the theodolites to external devices 
  • The DT-309 boasts an extended battery life, minimizing interruptions during fieldwork


Product Identifiers

National SKU

Product Code


Product Details

Product Dimensions
Weight (kg)

Height (mm)

Width (mm)

Depth (mm)

Warranty & Care
2 Year Warranty

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