OpenClose GLM 50 PROFESSIONAL LASER MEASURE The easy solution for precise distance measurement Easy to operate due to intuitive keypad Large, illuminated display for the best readability Robust IP54 design for tough jobsite conditions Additional data Laser diode 635 nm, < 1 mW Measurement range 0.05 – 50.00 m Weight, approx. 0.14 kg Measurement time, typical < 0.5 s Laser class 2 Measurement accuracy, typical ± 1.5 mm* (*plus use-dependent deviation) Measurement time, max. 4 s Power supply 2 x 1.5 V LR03 (AAA) Automatic deactivation 5 min Units of measurement m/cm/mm Laser colour Red Measuring range, up to 50 m.