Using air damping compensator, with automatic compensation function. To meet with the level measurement requirements of engineering constuction project.
| Model | LAL-1 | |
| Telescope | Erect | |
| Magnification | 20X | 32X |
| Objective Lens Aperture | 36mm | 40mm |
| Field of view | 1°20' | |
| Shortest focusing distance | 0.5m | |
| Stadia multiplying constant | 100 | |
| Stadia additive constant | 0 | |
| Working Range | ±15' | |
| Accuracy | ±0.5'' | ±0.3'' |
| Accuracy of Bubble | 8'/2mm | |
| Diagraph on scale | 1° or 1gon | |
| Standard error per male | 2.5mm | 1.0mm |
| Weight | 1.8kg | |
| The size of Triple | M16 or 5/8'' | |