The Bosch GLM 250 VF Professional Laser Measure features a 0.05-250m measuring range with ±1 mm accuracy and an integrated telescopic viewfinder for optimal laser point visibility up to 250m . Measurement time is <0.5s typical . Includes area, volume, and indirect height calculation via Pythagoras functions . Memory capacity stores up to 30 values . Robust IP54 dust and splash protection with rubberised edges and corners . Power supply: 4 x 1.5V LR03 (AAA) batteries . Weight: 0.24 kg . Tripod thread: 1/4" . Suitable for surveyors, civil engineers, construction professionals, and architects. Order numbers: 0 601 072 170, 0 601 072 100, 0 601 072 1B0 .