These electronic clinometers provide accurate height and ale measurements quickly and easily, Height measurements can be taken from any distance or position because no fixed distance to the object being measured is required. Function selection is simple. Use a single key to choose from these functions. DIST (Distance setup and height measuring), HGT (Height measuring), and DEG (Angle measuring). Results are displayed once measurement is complete, and no manual counting is required. Lightweight yet rugged, the clinometers can withstand the toughest use in the field . These highly efficient instruments offer extremely low battery consumption and feature a low battery indictor.