Technical Specifications Measurement Range: 0.15–30 m Measuring Accuracy: ±1.5 mm Laser Class: Class 2 Laser Type: 635 nm, <1 mW Laser Colour: Red Measurement Time: 0.5–4.2 seconds Units: m / cm / mm Weight: 0.09 kg Dimensions: 100 × 43 × 24 mm Power Supply: 2 × 1.5 V LR03 (AAA) Automatic Shut-Off: 5 minutes Measurement Functions: Length, area and continuous measurement Certification: ISO 16331-1 Bosch confirms these specifications for the GLM 30-23 Professional. Description Laser Measure Bosch GLM 30-23 Professional is a compact and lightweight digital laser measuring tool designed for fast and accurate indoor measurements. It provides a 0.15–30 m measuring range with typical accuracy of ±1.5 mm. Its simple two-button interface makes operation easy, while multiple measuring functions allow length, area and continuous measurements. The pocket-sized 90 g design is convenient for carrying and everyday professional use. Ideal for: Flooring, drywall installation, tiling, painting, carpentry, HVAC installation, interior work, material estimation and construction measurements.