Features
* White + Black color
*Whole aluminium body
*Reliable magnetic-damping,V design wire hung compensator.
*Excellent sealed structure for using in any weather condition.
*Integrated flat and domed base for easy-using.
*Endless horizontal drive.
Specification:
| Model Parameter | Al-20 | AL-24 | AL-28 | AL-32 |
| StandardDeviation for 1km Double-run levelling | 2.5mm | 2.0mm | 2.0mm | 1.5mm |
| Telescopeimage | Erect | ERECT | ERECT | ERECT |
| Magnification | 20X | 24X | 28X | 32X |
| ClearObjective Aperture | 30mm | 30mm | 30mm | 30mm |
| Fieldof View | 1°20′ | |||
| ShortestFocusing Distance | 0.55m | |||
| StadiaMultiplying Constant | 100 | |||
| StadiaAdditive Constant | 0 | |||
| Sensitivityof Circular Level | 8′/2mm | |||
| Graduationinterval of Circle | 1°or 1gon | |||
| Compensatortype | V-shaped wire suspension magnetic-damping | |||
| WorkingRange | ±15′ | |||
| SettingAccuracy | ±0.5″ | |||
| Dimensions | 207×134×128mm | |||
| Weight | 1.8kg | |||
| Connectingsize to tripod | M16or5/8″ | |||