Super quick leveling with stabilized line of sight
Thanks to the finely
tuned auto-collimation system, the Topcon line of AT-B autolevels are
the ideal device for determining height differentials on busy and noisy
job sites. With a completely new small lightweight design, they have
excellent visibility of horizontal circle, superior gear ratio for shock
and vibration and improved tangents and knobs.
• 3 Models - 32x, 28x and 24x magnifications
• Rapid, accurate, and stable automatic compensation
• Ultra-short 20cm focusing
• All-weather dependability
• Endless fine horizontal adjustments
Specifications
| Telescope | AT-B2 | AT-B3A | AT-B4A |
| Magnification | 32x | 28x | 24x |
| Field of View | 1°20’ | 1°25’ | 1°25’ |
| Min. Focus Distance | 0.3 m | 0.3 m | 0.3 m |
| Image | Erect | Erect | Erect |
| Stadia Constant | 100 | 100 | 100 |
| Focussing Speed | 2 Speed | 1 Speed | 1 Speed |
| Accuracy (1Km Double Run) | 0.7 mm | 1.5 mm | 2.0 mm |
| Compensator System | Magnetically Dampened | Magnetically Dampened | Magnetically Dampened |
| Compensator Accuracy | 0.3” | 0.5” | 0.5” |
| Compensator Range | ±15’ | ±15’ | ±15’ |
| Horizontal Circle | 1° | 1° | 1° |
| Water Rating | IPX6 | IPX6 | IPX6 |
| Operating Temperature | -20°C to 50°C | -20°C to 50°C | -20°C to 50°C |
| Width | 122 mm | 122 mm | 122 mm |
| Length | 215 mm | 214 mm | 214 mm |
| Height | 140 mm | 140 mm | 140 mm |
| Weight | 1.85 kg | 1.5 kg | 1.5 kg |
