The Topcon AT-B4A Auto Level is a high-precision instrument designed for construction, surveying, and civil engineering applications. With 24× magnification and a 32 mm objective lens, it delivers clear, precise results, achieving an accuracy of ±2.0 mm over a 1 km double-run leveling. Equipped with a magnetic damping compensator and a ±15′ range, the AT-B4A ensures quick and stable leveling, even on unsteady surfaces. Its IPX6 water resistance and shock-resistant design make it suitable for use in rugged and wet environments. The minimum focus distance of 0.2 m allows for close-range work, adding to its versatility. Durable, lightweight, and easy to use, the Topcon AT-B4A Auto Level is a reliable tool for professionals demanding precision and durability.