The Topcon AT-B series establishes a new benchmark for auto levels used in surveying, engineering, and construction applications. The automatic level AT-B4A has even greater environmental reliability. The instrument is completely resistant to driving rain and spraying water according to the IPx6 classification, which protects it from strong water jets coming from all sides. Despite any slight vibrations present when working close to heavy machinery or busy highways, the Topcon AT-B series quickly levels and stabilizes the line of sight with its finely tuned magnetic damping system.
