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Level Topcon Auto Levels AT-B Series
Level Topcon Auto Levels AT-B Series

1.3 Models - 32x, 28x, and 24x Magnifications 2.Rapid, Accurate, and Stable Automatic Compensation 3.Ultra-Short 20cm AT-B Se

    •    Durable, Dependable, High Value Auto Levels         All-Weather Dependability    •    Clampless, Endless Fine Horizontal Adjustments

Rapid, Stable, and Durable Compensator

The compensator of AT-B Series incorporates four suspension wires made of super-high-tensile 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.

Horizontal Circle for Angle Measurement

Horizontal angles can be directly read in 1º 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.

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 the works in confined spaces. 

Specifications

TELESCOPE

Length

AT-B2215mm (8.46 in.)

AT-B3215mm (8.46 in.)

AT-B4215mm (8.46 in.)

Magnification

AT-B232X

AT-B328X

AT-B424X

Objective Aperture

AT-B242mm (1.65 in.)

AT-B336mm (1.42 in.)

AT-B432mm (1.26 in.)

Resolving Power

AT-B23 in.

AT-B33.5 in.

AT-B44 in.

Field of View

AT-B21°20’

AT-B31°25’

AT-B41°25’ (at 100m/328ft.)

(at 100m/328ft.)

AT-B2(2.3m/7.5 ft.)

AT-B3(2.5m/8.2 ft.)

AT-B4(2.5m/8.2 ft.)

Min. Focus from end of telescope

AT-B20.2m (7.9 in.)

AT-B30.2m (7.9 in.)

AT-B40.2m (7.9 in.)

Min. Focus from instrument center

AT-B20.3m (1 ft.)

AT-B30.3m (1 ft.)

AT-B40.3m (1 ft.)

Image

AT-B2Erect

AT-B3Erect

AT-B4Erect

Stadia Constant

AT-B20

AT-B30

AT-B40

Stadia Ratio

AT-B2100

AT-B3100

AT-B4100

Focusing Knob

AT-B22-speed

AT-B31-speed

AT-B41-speed

Sighting Aid

AT-B2Peep Sight

AT-B3Gun Sight

AT-B4Gun Sight

ACCURACY

Without Micrometer

AT-B20.7mm (0.03 in.)

AT-B31.5mm (0.06 in.)

AT-B42.0mm (0.08 in.)

With Micrometer

AT-B20.5mm (0.02 in.)

AT-B3n/a

AT-B4n/a

COMPENSATOR

Type

Pendulum compensator with magnetic damping system

Setting Accuracy

AT-B20.3 in.

AT-B30.5 in.

AT-B40.5 in.

Working Range

AT-B2±15 ft.

AT-B3±15ft.

AT-B4±15 ft.

CIRCULAR LEVEL

Sensitivity

AT-B210 ft./2mm

AT-B310 ft./2mm

AT-B410 ft./2mm

HORIZONTAL CIRCLE

Diameter

AT-B2103mm (4.1 in.)

AT-B3103mm (4.1 in.)

AT-B4103mm (4.1 in.)

Minimum Division

AT-B21°/1gon

AT-B31°/1gon

AT-B41°/1gon

GENERAL

Water Resistance

IPX6 (IEC 60529:2001)

Operating Temperature

-4°F to +122°F (-20ºC to +50ºC)

Width

AT-B25.12 in. (130mm)

AT-B35.12 in. (130mm)

AT-B45.12 in. (130mm)

Length

AT-B28.46 in. (215mm)

AT-B38.46 in. (215mm)

AT-B48.46 in. (215mm)

Height

AT-B25.51 in. (140mm)

AT-B35.51 in. (140mm)

AT-B45.31 in. (135mm)

Weight

AT-B24.1 lbs. (1.85kg)

AT-B33.7 lbs. (1.7kg)

AT-B43.7 lbs. (1.7kg)

Level Topcon Auto Levels AT-B Series

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