Specifications
Surveying Instrument:DA1700 Series Automatic Leveling Magnetically Damping Auto LevelSurveying Instrument:DA1700 Series Automatic Leveling Magnetically Damping Auto Level
Features:
Chinese patent, excellent shockproof function
Excellent sealed structure for using in any weather
Exclusive closed magnetic field, magnetically-dampened compensator
Friction-braked rotation and endless horizontal drive
| ITEM | Model | DA1720 | DA1722 | DA1724 | DA1726 | DA1728 | DA1730 | DA1732 |
| Standard deviation for 1km double run levelling | 2.5mm | 2.0mm | 2.0mm | 2.0mm | 1.5mm | 1.5mm | 1.0mm | |
| Image | Erect | Erect | Erect | Erect | Erect | Erect | Erect | |
| Magnification | 20x | 22x | 24x | 26x | 28x | 30x | 32x | |
| Objective aperture | 34mm | 34mm | 36mm | 36mm | 36mm | 38mm | 38mm | |
| Field of view | 1º20' | 1º20' | 1º20' | 1º20' | 1º20' | 1º20' | 1º20' | |
| Minimum focus | 0.3m | 0.3m | 0.3m | 0.3m | 0.3m | 0.3m | 0.3m | |
| Multiplication constant | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
| Additive constant | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Compensator range | ±15' | ±15' | ±15' | ±15' | ±15' | ±15' | ±15' | |
| Compensator setting accuracy | ±0.8" | ±0.6" | ±0.6" | ±0.6" | ±0.5" | ±0.5" | ±0.5" | |
| Sensitivity of bubble | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm | |
| Horiz circle-reading | 1º or lgon | 1º or lgon | 1º or lgon | 1º or lgon | 1º or lgon | 1º or lgon | 1º or lgon | |
| Instrument weight | 1.50kg | 1.50kg | 1.50kg | 1.50kg | 1.50kg | 1.50kg | 1.50kg | |
| Tripod | M16 or 5/8" | M16 or 5/8" | M16 or 5/8" | M16 or 5/8" | M16 or 5/8" | M16 or 5/8" | M16 or 5/8" | |