The Bosch GLM 40 Professional Laser Measure provides a wide range of measurement modes in a single compact design. This intuitive tool provides all significant measurement modes in one: standard length, surface and, volume calculation as well as indirect height measurements. It features an easy-to-read illuminated screen that displays the last three measurement results for quick reference. The laser measure also has a memory function that saves the last 10 measurements for time-efficient use. In addition to its built-in dust and splash water protection, the Laser Measure GLM 40 Professional also features a sturdy, shockproof housing that protects the tool from damage when dropped from a height of up to 1 metre. This tool is ideal for indoor installations including electrical, tiling, carpentry, drywall fittings, construction painting, and HVAC jobs. Specifications: Measurement Range: 0.15-40.00m. Units of Measurement: m/cm, ft/inch. Measurement Accuracy: +-1.5mm. Laser Diode: 635 nm, < 1 mW. Laser Class: 2. Memory Capacity (Values) : 10. Power Supply: 2 x AAA 1.5V LR03 Batteries (supplied) Dust and Splash Protection: IP54. Weight: 0.09kg.