Bosch 0 601 072 900 Laser Measure  With a working range of 40 metres, the GLM 40 Laser Measurer is the ideal tool to accompany professionals for all measuring applications. With an intuitive five button operation and a simple area / volume measurement functions, it\'s extremely easy to use. The compact design means it also fits nicely into your pocket.  Features:   Distance measurement, area calculation, volume calculation - all intuitive to use  Illuminated, three-line display maximises readability  Memory function enables easy access to the last ten measurements  Robust, shockproof housing with IP54 protection class (splash and dust protection)  Reliable measuring results in all circumstances, proven by ISO certification   Function selection button:   Length measurement  Continuous measurement  Area measurement  Volume measurement  Single Pythagoras  Addition/Subtraction  Memory (10 measurements)   Comes with:   Carry pouch  2 x AAA batteries   Specification:  Laser diode: 635 nm, < 1 mW  Measurement range: 0.15 - 40 m  Laser class: 2  Measurement accuracy, typical: +/- 1.5 mm  Measurement time, typical: < 0.5 s  Measurement time, max: 4 s  Automatic deactivation: 5 min  Weight, approx: 0.09 kg  Length: 105 mm  Width: 41 mm  Height: 24 mm  Units of measurement: m/cm, ft/inch  Battery lifetime, individual measurements, approx: 5.000  Dust and splash protection: IP54  Shock protection: up to 1 m