DESCRIPTION: The ideal 360? line laser for indoor use. Self-levelling pendulum system ? locks during transport. BM 3 mount with ratchet clip for ceilings enables multiple tool applications. Clearly visible 360? laser lines, ideal for indoor use. Additional data: Accuracy: ? 0.4 mm/m* (*plus use-dependent deviation), Working range: up to 20 m, Laser diode: 630 ? 650 nm, < 1mW, Operating temperature: 5 ? 40 ?C, Storage temperature: -20 ? 70 ?C, Laser class: 2, Working range without receiver: up to 20 m, Self-levelling range: ? 4?, Levelling time: 4 s, Power supply: 4 x 1.5 V LR6 (AA), Operating time (max.): 12 h, Tripod thread: 1/4?, Weight, approx.: 0.38 kg, Colour of laser line: red, Working range, value: 20 m