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| Supplier: | Nanjing Longteng Survey Instrument Co., Ltd. |
|---|---|
| Price: | Negotiable/Piece |
| Min Order: | 1/Piece |
| Quantity:: | |
| Trade Terms: | FOB,CFR,CIF |
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| Model | DT-21 | DT-23 | DT-22L | |
| Telescope | Image | Erect | Erect | Erect |
| Magnification | 30× | 30× | 30× | |
| Objective lens | 45mm | 45mm | 45mm | |
| Field of view | 1°30′ | 1°30′ | 1°30′ | |
| Minimum focus | 1.4m | 1.4m | 1.4m | |
| Stadia ratio | 100 | 100 | 100 | |
| Resolving power | 3″ | 3″ | 3″ | |
| Angle measurement | Method | Absolute encoder | ||
| Mininum reading | 1″,5″ | |||
| Detection method | H:both V:both | H:both V:both | H:both V:both | |
| Accuracy | 2″ | 2″ | 2″ | |
| Angle Unit | DEG / MIL/ GON | |||
| Display Panel | LCD both side | |||
| Base and mainbody structure | Separate style | Integration | Separate style | |
| Compensator | Tilt Sensors | Yes | ||
| Compensating range | ±3′ | |||
| Up laser plummet | Wave Length | / | / | 635nm |
| Laser Spot Size | / | / | 5mm/100m | |
| consistency between laser axle and collimation axle | / | / | ≤5" | |
| Laser Range | / | / | ≥200m(day) | |
| Down Plummet | Laser Plummet | |||
| Plate level | 30″/2mm | |||
| Circular level | 8′/2mm | |||
| Operating temperature | -20°C-+50°C | |||
| Power | Battery | Lion | ||
| Voltage | 1400mah,3.7V | |||
| Weight | 4.8kg | 4.8kg | 4.8kg | |
| Dimension | 200×160×345mm | |||
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