
This instrument is mainly suitable for high precision survey of engineering including construction project, mines, road, bridge, etc. It possesses convenient operation, clear image, water proof facility, type V Magnetic damping and compensation mechanism, and precision of compensator. It is speedy and reliable as well.
SPECIFICATION:
| Model | AL8-22 | AL8-26 | AL8-28 | AL8-32 |
| Telescope | Erect | Erect | Erect | Erect |
| magnification | 22X | 26X | 28X | 32X |
| Compensator form | Model V | Model V | Model V | Model V |
| Damp form | Magnetism damp | Magnetism damp | Magnetism damp | Magnetism damp |
| Objective Aperture | 36mm | 36mm | 36mm | 36mm |
| Field of View | 1°20' | 1°20' | 1°20' | 1°20' |
| Minimum focusing distance | 1m | 1m | 1m | 1m |
| Stadia Ratio | 100 | 100 | 100 | 100 |
| Stadia Plus Constant | 0 | 0 | 0 | 0 |
| Accuracy | ±0.3"/min | ±0.3"/min | ±0.3"/min | ±0.3"/min |
| Level Sensitivity | ±0.5" | ±0.5" | ±0.5" | ±0.5" |
| Compensating Range | ±15' | ±15' | ±15' | ±15' |
| Circular Level Sensitivity | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm |
| Horizontal circle graduating | 1° | 1° | 1° | 1° |
| standard deviation/ kilomere | 2.5mm | 2.5mm | 2.5mm | 2.5mm |




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