Topcon ATB4A

The Topcon AT-B4A is a dependable 24× automatic optical level built for accurate levelling on busy construction and engineering sites. Its fast-stabilising self-levelling system, close-focus capability and weather-resistant design make it a practical choice for consistent height control and general site surveying work.

24x High-Contrast Optics: Delivers sharp images with a 20cm minimum focus for versatile indoor and outdoor use.
Rapid Magnetic Damping: Automatically stabilizes the line of sight against heavy equipment vibrations for ±2.0mm accuracy.
IPX6 Water Protection: Engineered to withstand powerful water jets and torrential rain during extreme site conditions.
Friction Brake Drive: Features a horizontal fine motion screw for fast, smooth, and precise targeting.
All-Weather Reliability: Rugged metal housing ensures long-term durability and consistent performance in any climate.

ADD TO YOUR QUOTE

Enquire about hiring or buying this product. You’ll be contacted by one of our Sales Team.

Adding one of these to your enquiry?

5m 5 Section Aluminium Levelling Staff

Topcon OS-200

Topcon RL-H5A

FAQs

What are the primary applications for the Topcon ATB4A on a busy building site?

The Topcon ATB4A is primarily utilised for checking levels in foundations, setting out drainage runs, and establishing accurate sub-base heights for roadworks. Its quick setup makes it ideal for high-paced environments where height transfers are performed repeatedly throughout the day.

How does the Topcon ATB4A handle the vibration of heavy plant machinery?

The ATB4A features a sophisticated magnetic damping system that stabilises the line of sight almost instantly. This allows operators to take confident, steady readings even in high-vibration zones near excavators, rollers, or piling rigs.

Is it possible to hire the Topcon ATB4A?

Yes, a large fleet of Topcon ATB4A units is available for immediate hire, offering a cost-effective way to use high-end optics without capital outlay. Every hired instrument is dispatched fully calibrated and ready for immediate site use.

Where should I go for Topcon equipment repairs or annual servicing?

PQS Survey Ltd provides a full-service solution across a UK-wide depot network. Trained service personnel specialise in Topcon maintenance, offering everything from standard annual calibrations to emergency repairs to get equipment back into the field quickly.

How does the ATB4A perform in wet and muddy conditions?

With an IPX6 rating, the ATB4A is exceptionally resistant to powerful sprays of water and heavy rain. The nitrogen-filled housing also prevents the lens from fogging during cold, damp mornings, ensuring the instrument is ready for work immediately.

What makes the Topcon ATB4A particularly useful for working in tight spaces?

The ATB4A features an incredibly short focusing distance of just 0.2 metres. This is a massive advantage when working in narrow trenches, manholes, or confined building areas where there is limited room to back away from the levelling staff.

What is the benefit of the four-tension wire compensator?

The internal automatic compensator uses four high-tensile metal suspension wires that are largely unaffected by