Topcon AT-B3 Automatic Level

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Rapid, Stable, Durable Compensator

The compensator of AT-B Series incorporates four suspension wires made of super-hightensile metal that features minimal thermal expansion coefficient, providing unmatched durability and accuracy. Finely tuned magnetic damping system quickly levels and stabilizes the line of sight despite the fine vibrations present when working near heavy equipment or busy roadways.

20cm (7.9 in.) – 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 working in confined spaces.

Horizontal Circle for Measurement

Horizontal angles can be directly read in 1° or 1gon units. 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.

All-Weather Dependability

With the IPX6 rating, the instrument is protected against powerful water jets from all directions, meaning the AT-B Series withstands a sudden shower or torrential rainfall. The advanced protection design also deters clouding or condensation inside the telescope.

Specifications Topcon AT-B3 Automatic Level

Telescope

• Magnification: 28x
• Field of View: 1°25’
• Min. Focus from center of the instrument: 0.3m (1 ft.)
• Image: Erect
• Stadia: Yes (1:100)
• Focusing Knob: 1-speed

Accuracy (1km double run leveling)

• Without Micrometer: 1.5mm (0.06 in.)

Compensator

• Type: Pendulum compensator with magnetic damping system
• Setting Accuracy: 0.5”
• Working Range: ±15

Horizontal Circle

• Minimum Division: 1°/1gon

General

• 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)

Standard Package Components

• AT-B Level
• Plumb bob
• Hex wrench
• Adjusting pins
• Vinyl cover
• Cleaning cloth
• User manual
• Hard case

Optional Accessories

• Diagonal Eyepiece
• 40x Eyepiece
• Optical Micrometer