Utilizing a finely tuned magnetic damping system, Topcon AT-B3 28X Magnification Automatic Level quickly stabilises the line of sight. These precision instruments ensure reliable levelling even when working near heavy equipment or busy highways where fine vibrations could be present. The automatic levels feature IPX6 protection against powerful water jets from all directions and are fully resistant to driving rain and splashing water.
Horizontal angles can be directly read in 1º or 1gon units. The free rotation feature allows you to read any angle from zero. The circle is covered for protection against dirt and scratch. The readout window is located below the eyepiece for quick reading.
AT-B3 Features:
- Durable, Dependable, High-Value Auto Levels
- Rapid, Accurate, and Stable Automatic Compensation
- Ultra-Short 20cm (7.9 in.) Focusing
- All-Weather Dependability
- Clampless, Endless Fine Horizontal Adjustments
Rapid, Stable, and Durable Compensator
The compensator of the AT-B Series incorporates four suspension wires made of super-high-tensile metal that features a minimal thermal expansion coefficient, providing unmatched durability and accuracy. The finely tuned magnetic damping system quickly levels and stabilizes the line of sight despite the fine vibrations of working near heavy equipment or busy roadways.
Horizontal Circle for Angle Measurement
Horizontal angles can be directly read in 1º or 1gon units. The free rotation feature allows you to read any angle from zero. The circle is covered for protection against dirt and scratch. The readout window is located below the eyepiece for quick reading.
20cm (7.9 in.) – Ultra-Short Minimum Focus
The AT-B Series can focus on objects at 20cm (7.9 in.) in front of the telescope. This feature dramatically facilitates work in confined spaces.
- Length: 215mm (8.46 in.)
- Magnification: 28X
- Objective Aperture: 36mm (1.42 in.)
- Resolving Power: 3.5 in.
- Field of View: 1°25’
- (at 100m/328ft.) (2.5m/8.2 ft.)
- Min. Focus from the end of the telescope: 0.2m (7.9 in.)
- Min. Focus from instrument centre: 0.3m (1 ft.)
- Image: Erect
- Stadia Constant: 0
- Stadia Ratio: 100
- Focusing Knob: 1-speed
- Sighting Aid: Gun Sight
- Accuracy: AT-B3
- Without Micrometer: 1.5mm (0.06 in.)
- With Micrometer: n/a
- Compensator: AT-B3
- Type: Pendulum compensator with magnetic damping system
- Setting Accuracy: 0.5 in.
- Working Range: ±15ft.
- Circular Level: AT-B3
- Sensitivity: 10 ft./2mm
- Horizontal Circle: AT-B4
- Diameter: 103mm (4.1 in.)
- Minimum Division: 1°/1gon
- General: AT-B3
- Water Resistance: IPX6 (IEC 60529:2001)
- Operating Temperature: -4°F to +122°F (-20ºC to +50ºC)
- Width: 5.12 in. (130mm)
- Length: 8.46 in. (215mm)
- Height: 5.51 in. (140mm)
- Weight: 3.7 lbs. (1.7kg)