Topcon AT-B4 Automatic 24X Auto Level Surveying

Name: Topcon AT-B4 Automatic 24X Auto Level Surveying
Brand: Topcon
SKU: AT-B4
Price: 195.0 USD
Availability: InStock

P/N: AT-B4USED · TESTED

$195.00

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Every unit is function-tested before shipping and covered by our warranty from delivery. DOA units replaced at our cost.

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Key specifications

Instrument type Automatic optical level (Topcon AT-B series, 24x model)

Magnification / field of view 24x · 1°25' field of view

Levelling accuracy ±2.0 mm standard deviation per 1 km double-run

Compensator Magnetically damped pendulum on four suspension wires; 0.5 arcsec setting accuracy

Minimum focus / stadia 20 cm (7.9 in) close focus · 1:100 stadia ratio

Horizontal circle 360°, 1° graduations, free rotation

Water resistance IPX6 (protected against powerful water jets)

Operating temperature -20 to +50 °C (-4 to +122 °F)

Item specifics

Model AT-B4

MPN AT-B4

Brand Topcon

Measuring Technology Laser

Country of Origin Japan

The Topcon AT-B4 is the 24x model in Topcon’s AT-B series of automatic optical levels, an everyday instrument for grade checking, elevation transfer and level runs on construction, engineering and survey sites. Its compensator — a magnetically damped pendulum hung on four high-tensile suspension wires — self-levels the line of sight to 0.5 arcsec and settles quickly, holding a standard deviation of ±2.0 mm over a 1 km double-run.

This listing is for the Japan-built AT-B4 pictured, with 20 cm close focus for tight interior work, a free-rotating horizontal circle graduated in 1° steps for basic angle layout, and IPX6 water resistance for wet site conditions; it ships complete with a plumb bob, adjusting pins, vinyl cover, cleaning cloth and hard-shell carrying case.

Condition: Used · Tested, as listed. The photographs are of the actual unit you’ll receive, covered by our warranty.

Orders are professionally packed and dispatched fast, fully tracked. Heavy items ship on protected freight. Every unit carries our warranty from delivery.