Topcon DT300 Digital Theodolite
Lightweight and compact angular measurement device
The DT-300 is a lightweight, compact alignment and angular measurement device which boasts up to 30 workdays of power; the highest water and dust protection in its category; and convenient, high-precision laser guidance.
Feature and Benefit
- High-accuracy (5”, 7” and 9” models) measurements
- 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
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Description
Work fast, with precision
With our 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.
With a range of angular accuracies available, only Topcon can offer the precision, durability, and advanced technology found in the DT-300 series.
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.
Specification
| TELESCOPE | |
| Length | 149 mm |
| 152 mm (L Models)*3 | |
| Aperture | 45mm |
| 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 (L Models)*3 | |
| Stadia ratio | 100 |
| Stadia constant | 0 |
| ANGLE MEASUREMENT | |
| Method | Rotary absolute encoder |
| Detecting | Horizontal: 1 sides |
| Vertical: 1 sides | |
| Minimum Reading | 5” Model: |
| 1” (0.0002 gon/0.01 mil)/5” (0.001 gon/0.1 mil) (selectable) | |
| 7” Model: | |
| 5” (0.002 gon/0.05 mil)/10” (0.005 gon/0.1 mil) (selectable) | |
| 9” Model: | |
| 10” (0.002 gon/0.05 mil)/20” (0.005 gon/0.1 mil) (selectable) | |
| Accuracy*1 | 5”, 7”, 9” |
| DISPLAY | |
| Unit | 2 sides for 5” and 7” model |
| 1 side for 9” model | |
| TILT ANGLE COMPENSATION (5” AND 7” MODELS) | |
| 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 |
| POWER SUPPLY | |
| Mode | 4 AA dry cells or BDC71 (Optional accessory) |
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