Technical Specifications Measurement Range: 0.15–40 m Measuring Accuracy: ±2 mm Laser Class: Class 2 Laser Colour: Red Laser Diode: 635 nm, <1 mW Lowest Indication Unit: 1 mm Memory: 10 measurements Dust & Splash Protection: IP54 Power Supply: 2 × 1.5 V AAA batteries Battery Life: Approx. 5, 000 measurements Weight: 0.1 kg Dimensions: 105 × 41 × 24 mm Automatic Shut-Off: 5 min Functions: Distance, area, volume and indirect height measurement. Description Laser Measure Bosch GLM 40 Professional is a compact and easy-to-use 40 m digital laser distance meter designed for accurate indoor measurements. It provides a 0.15–40 m measuring range with typical accuracy of ±2 mm. The illuminated three-line display, 10-measurement memory and IP54 protection make it suitable for professional job-site use. Ideal for: Construction, carpentry, tiling, drywall installation, electrical work, painting, HVAC installation, flooring and interior measurements.