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
| SPECIFICATIONS | |||||
| Model | DT-305K | DT-305LK | DT-309GK | DT-309GLK | |
| Telescope | Length | 149 mm | 152 mm | 149 mm | 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 | 0.9 m | 1.0 m | 0.9 m | 1.0 m | |
| Stadia ratio | 100 | ||||
| Stadia constant | 0 | ||||
| Angle measurement | Method | Rotary absolute encoder | |||
| Detecting | Horizontal: 1 sides | ||||
| Vertical: 1 sides | |||||
| Minimum display | 1″ (0.0002 gon/0.01 mil)/5″ (0.001 gon/0.1 mil) (selectable) | 10″ (0.002 gon/0.05 mil)/20″ (0.005 gon/0.1 mil) (selectable) | |||
| Accuracy*1 | 5″ | 9″ | |||
| Display | Unit | 2 sides | 1 sides | ||
| Tilt angle compensation | Type | Automatic vertical compensator | – | ||
| Range of compensation | ±3′ (±0.0555 gon) | – | |||
| Compensation constant | Can be changed (compensation is done at the same time with vertical angle 0 point) | – | |||
| Optical plummet | Magnification | 3X | |||
| Minimum focus | 0.5 m | ||||
| Sensitivity of levels | Circular level | 10’ /2 mm | |||
| Plate level | 30″/ 2 mm | ||||
| Temperature | Operating temperature range | -20 to 50°C (-4 to 122°F)*2 | |||
| Storage temperature range | -30 to 60°C (-22 to 140°F) (no condensation) | ||||
| Environmental durability | Dust and water protection | IP66 (IEC 60529: 2001) | |||
| Power Supply (Standard) | Power source | 4 AA alkaline batteries | |||
| Working duration at 20°C (Standard) | Theodolite only | about 230 hours | |||
| Laser only | – | about 80 hours | – | about 80 hours | |
| Theodolite and laser | – | about 55 hours | – | about 55 hours | |
| Power Supply (Option) | Power source | 4 AA alkaline batteries | |||
| Working duration at 20°C (Standard) | Theodolite only | about 230 hours | about 250 hours | ||
| Laser only | – | about 80 hours | – | about 80 hours | |
| Theodolite and laser | – | about 55 hours | – | about 55 hours | |
| Power Supply (Option) | Power source | BDC71 (Optional accessory) | |||
| Working duration at 20°C (Option) | Theodolite only | about 300 hours | about 350 hours | ||
| Laser only | – | about 100 hours | – | about 100 hours | |
| Theodolite and laser | – | about 70 hours | – | about 70 hours | |
| Tribrach | Type | Detachable | Fixing | ||
| Laser-pointer | Signal source | – | Red laser diode (633 nm) | – | Red laser diode (633 nm) |
| Maximum output | – | 0.6 mW | – | 0.6 mW | |
| Laser Class | – | Class 2 | – | Class 2 | |
| Laser beam range | – | 50 m (in daylight) | – | 50 m (in daylight) | |
| Others | Size (with handle) | 173 (D) X 181 (W) X 318 (H) mm (Display on both sides) | 173 (D) X 174 (W) X 318 (H) mm (Display on one side) | ||
| Weight | 4.1 kg (9.04 lb) (with batteries and battery holder) | 4.0 kg (8.82 lb) (with batteries and battery holder) | |||