With metal and sealed body, it has high stability and good water-proof
Equipped with a press button for compensator checking
Each level pasts vibratory test and temperature test from -25 centigrade degree to +50 centigrade degree
| Model | DSZ2 | DSZ3 | NAL224 | NAL228 | NAL232 | |
| Standard deviation of 1KM double run leveling | ≤±1.0mm | ≤±2.0mm | ≤±2.0mm | ≤±1.5mm | ≤±1.0mm | |
| Telescope | Image | Erect | ||||
| Magnification | 32 × | 24 × | 24 × | 28 × | 32 × | |
| Clear Objective aperture | 40mm | 36mm | 40mm | |||
| Shortest focusing distance | 1.6m | 0.7m | 0.8m | 1m | ||
| Stadia ratio | 100 | |||||
| Stadia constant | 0 | |||||
| Compensator | Working range | ±14′ | ||||
| Setting accuracy | ≤±0.3″ | ≤±0.5″ | ≤±0.4″ | |||
| Setting time | ≤2S | |||||
| Sensitivity of circular level per 2mm | 8′/2mm | |||||
| Graduation interval of horizontal circle | 1 ° / DIV | |||||
| Working temperature | -30°C-+50°C | |||||
| Weight | 2.5kg | 2.0kg | ||||
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