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Optical plane table
1. Application
DP series optical plane table is designed on the principle of visual distance surveying, can be used to determine the distance and high different between two spot, and drew map directly. It is suitable for topography surveying in the field of town and rural program, farmland irrigation and water conservancy geology engineer design.
2. Specification
Model | DP5 | DP7 | DP10 |
1. telescope | |||
Magnification | 16X | 13X | 8X |
Objective aperture(mm) | φ30 | φ20 | φ14 |
Field of view | 1°40’ | 2°30’ | 2°30’ |
Resolving power | 6’’ | 10’’ | 13’’ |
multiplication constant | 100 | 100 | 100 |
addition constant | 0 | 180mm | 180mm |
Minimum visual distance | 3m | 3m | 2.5m |
Accuracy | ≤±5dm | ≤±7dm | ≤±10dm |
2. spirit level | |||
Vertical cycle level | 60’’/2mm | --- | --- |
Circular level | 8’/2nm | 8’/2nm | 8’/2nm |
3. Cycle | |||
Vertical cycle interval | 1° | 1° | 1° |
Vernier interval | 5’ | 10’ | 10’ |
Reading magnification | 2X | --- | --- |
4.parelled scale | |||
Length | 260mm | --- | 260mm |
moving range | 0-28mm | --- | 0-25mm |
5. plane table size | 500*600mm2 | 500*600mm2 | 500*600mm2 |
| 600*600mm2 | 600*600mm2 | 600*600mm2 |
6. Weight | |||
Net weight of alidade | 1.5kg | 1kg | 1kg |
Weight of complete set | 8.5kg | 8kg | 8kg |
Optical plane table