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.

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  • 3 Models - 32x, 28x and 24x magnifications
  • Rapid, accurate, and stable automatic compensation
  • Ultra-short 20cm focusing
  • All-weather dependability
  • Endless fine horizontal adjustments


Field of View1°20’1°25’1°25’
Min. Focus Distance0.3 m0.3 m0.3 m
Stadia Constant100100100
Focussing Speed2 Speed1 Speed1 Speed
Accuracy (1Km Double Run)0.7 mm1.5 mm2.0 mm
Compensator SystemMagnetically DampenedMagnetically DampenedMagnetically Dampened
Compensator Accuracy0.3”0.5”0.5”
Compensator Range±15’±15’±15’
Horizontal Circle
Water RatingIPX6IPX6IPX6
Operating Temperature-20°C to 50°C-20°C to 50°C-20°C to 50°C
Width122 mm122 mm122 mm
Length215 mm214 mm214 mm
Height140 mm140 mm140 mm
Weight1.85 kg1.5 kg1.5 kg