Bosch GLM 400 is a precision laser measuring instrument with Bosch patented technology for instant measurement of distance, area and volume. A handy device with 40m range, option of measuring in mm/cm/m/ft/in and accuracy of 0.2mm/m, it is ideal for both professional and household measurements. It comes with a built in memory for storing last 10 measurements and multiple utility functions. The device is compact easily fitting into a pocket and robust with dust and splash protection. For measurements from the rear measuring tool edge, weak backlighting and 25 ° C operating temperature are applicable for high reflectivity of the target (e. g. a white-painted wall). In addition, a deviation influence of ±0.05 mm/m must be taken into account. Technical Detail Measuring range m 0.05 - 40 Measuring accuracy mm ± 1.5 Protection rating - IP 54 Unit of measurement - m, cm, ft, in, ft/in Laser class - 2 Laser type nm, mW 635, Dimensions mm 106 x 45 x 24 Battery type - 2 x 1.5 V LR03 (AAA)