Digital display, with automatic rotation of the display when working overhead; Hold button to record the measurement value; intermediate angles can be set as reference angles (= O point), two different beep tones when approaching the O-point. Batteries: 2x AAA 1.5 V, Mignon, Mind. 30 hours, automatic switch off after 7 minutes.

Observational error:
• Vials: Normal position 0.50 mm / m
• Electronic inclinometer: 0 ° and 90 °: 0.05 °, 1 º - 89 º: 0.2 °;
• Display in °,%, mm / m, and inch / ft.