Technical parameters (using high-quality indium steel ruler) | |
Standard deviation of the round-trip measurement height difference per km | ≤1mm |
Telescope | Erect |
Magnification | 38× |
Objective lens diameter | 50mm |
Compensator working range | 15′ |
Accuracy | ±0.3″ |
Circular level sensitivity | 20′/2mm |
Working temperature | -30ºC~+50ºC |
Waterproof grade | IP55 |