Description
Durable, dependable, high value Topcon Dumpy levels.
Topcon have two new, updated auto levels to replace the AT-B3 and AT-B4! The levels have been updated to feature a smaller, lightweight design while still improving the performance of the unit.
New Features:
Completely NEW design, same compensator from AT-B2 series, lightweight at 1.5 kg m(3.3lb) A 13% reduction from previous version, easy to grasp (compact body), better visibility of horizontal circle, improved tangents/knobs, increased gear ratio for shock and vibration.
The Topcon AT-B Series Dumpy Levels are available in 3 Models – 24x, 28x, and 32x Magnification.
The AT-B Series of precision instruments utilise a finely tuned magnetic dampening system to provide unmatched durability and accuracy. Essential reliability when working near heavy equipment or busy highways, or where fine vibrations may be present.
Suitable for: Site preparation, earthworks, concreting, drainage and site set-out
Features: | Kit Includes: |
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SPECIFICATIONS: | AT-B2 | AT-B3 | AT-B4 |
Length | 215 mm | 214 mm | 214 mm |
Magnification | 32 x | 28 x | 24 x |
Objective Aperture | 42 mm | 36 mm | 32 mm |
Resolving power | 3 in. | 3.5 in. | 4 in. |
Field of view (at 100 m) | 1°20′ 2.3 m | 1°25′ 2.5 m | 1°25′ 2.5 m |
Focussing Knob | 2-speed | 1-speed | 1-speed |
Sighting aid | Peep sight | Gun sight | Gun sight |
Accuracy (w/out micrometre) | 0.7 mm | 1.5 mm | |
Accuracy (w/ micrometre) | 0.5 mm | n/a | n/a |
Circular level sensitivity | 2 mm | 2 mm | 2 mm |
Horizontal Circle diameter | 103 mm | 103 mm | 103 mm |
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