Topcon DT-300K Series

All the Theodolite You’ll Ever Need

DT-300 Series

High-accuracy measurements (5”, 7” and 9” models)
Ultra-rugged IP66 dust and heavy rain protection
Compact and light weight
Long-lasting Li-ion or AA battery life
Easy-to-use LCD backlit display(s)
Precise laser pointer guidance
Embedded tilt sensor for 5” and 7” models

Make your next job a snap

With the DT-300 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 two magnification choices of 26x and 30x, a super-short 3 ft. minimum focus distance for those tight areas, and angle accuracies of 5, 7, and 9 arc seconds.

Laser pointer

Add a whole new dimension of accuracy and confidence to your alignment jobs with our unique DT-300L Series featuring a red Class II laser beam. Use it anywhere on your site and see clearly in direct sunlight up to 165 ft. Now you can easily and accurately place anchor bolts at regular intervals on a line, set an angle and use the beam to verify your tape measure is properly aligned for the next stake, or “sight in” footers, frames, and tilt-up walls.

The ultimate in continuous operation

The DT-300/DT-300L Series provides up to 30 workdays of operation in Angle Measurement mode on 4 AA or optional Li-ion batteries, better than any other model. When it is time to change batteries, it’s as easy as snapping out the old ones and snapping in the new.

Durability, accuracy, and value

The DT-300 Series represents the highest accuracy and value in digital theodolite technology. Our 80 plus years of experience manufacturing the world’s most precise optical survey instruments, shines through in the precision, durability, and advanced technology found in each DT-300.

Water and dustproof

IP66 rating
Treated telescope to prevent moisture and eliminate lens fogging
Rain proof
Dust proof

Simple Operation

Large, high-contrast, backlit LCD’s
Simple five button interface panel
Horizontal and vertical angles
Slope by percent on angle

Laser accurate (L Series Only)

Beam is emitted directly from the lens
Bright red laser
Pin-point accuracy

Long-lasting power options

Up to 30 workdays of operation
Topcon BDC Li-ion battery
Or traditional AA batteries

Specification

🔭 Telescope

Model: DT-305K / DT-305LK / DT-309GK / DT-309GLK
Length: DT-305K / DT-309GK: 149 mm
DT-305LK / DT-309GLK: 152 mm
Aperture: 45 mm
Magnification: 30X
Image: Erect
Field of view: 1° 30′ (26 m/1,000 m)
Resolving power: 2.5″
Minimum focus: DT-305K / DT-309GK: 0.9 m
DT-305LK / DT-309GLK: 1.0 m
Stadia ratio: 100
Stadia constant: 0

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📐 Angle Measurement & Display

Method: Rotary absolute encoder
Horizontal / Vertical Sides: Horizontal: 1 sides
Vertical: 1 sides
Minimum Display (Selectable): DT-305K / DT-305LK: 1″ / 5″
DT-309GK / DT-309GLK: 10″ / 20″
Accuracy (ISO 17123-3: 2001): DT-305K / DT-305LK: 5″
DT-309GK / DT-309GLK: 9″
Display Sides: DT-305K / DT-305LK: 2 sides
DT-309GK / DT-309GLK: 1 side

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⚙️ Tilt Angle Compensation

Type: DT-305K / DT-305LK: Automatic vertical compensator
Range of compensation: DT-305K / DT-305LK: ±3′
Compensation constant: Can be changed (compensation is done at the same time with vertical angle 0 point)

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🎯 Optical Plummet

Magnification: 3X
Minimum focus: 0.5 m

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🌡️ Environment & Durability

Plate level: 30″ / 2 mm
Circular level: 10′ / 2 mm
Operating temperature range: -20°C to 50°C
Storage temperature range: -30°C to 60°C (no condensation)
Dust and water protection: IP66 (IEC 60529: 2001)

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🔋 Power Supply & Duration

Power Source (Standard): 4 AA alkaline batteries
Working Duration at 20°C (Standard): Theodolite only:

DT-305K / DT-305LK: about 230 hours
DT-309GK / DT-309GLK: about 250 hours

Laser only (DT-305LK / DT-309GLK): about 80 hours

Theodolite and laser (DT-305LK / DT-309GLK): about 55 hours
Power Source (Option): BDC71 (Optional accessory)
Working Duration at 20°C (Option): Theodolite only:

DT-305K / DT-305LK: about 300 hours
DT-309GK / DT-309GLK: about 350 hours

Laser only (DT-305LK / DT-309GLK): about 100 hours

Theodolite and laser (DT-305LK / DT-309GLK): about 70 hours

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✨ Laser-Pointer

Type: DT-305K: Detachable
DT-305LK / DT-309GLK: Fixing
Signal source: Red laser diode (633 nm)
Maximum output: 0.6 mW
Laser Class: Class 2
Laser beam range: 50 m (in daylight)

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⚖️ Others

Size (D x W x H) with handle: DT-305K: 173 x 181 x 318 mm
DT-305LK / DT-309GLK: 173 x 174 x 318 mm
Weight (with batteries and battery holder): DT-305K / DT-305LK: 4.1 kg
DT-309GK / DT-309GLK: 4.0 kg

Brochure

Download DT 300 Brochure