The Bosch GAM 270 MFL Professional Angle Measurer is a digital angle measurer and inclinometer in one, with laser-accurate transfer. Calculates mitre angles without the need for accessories. The inclinometer with laser has a range of up to 30m. Specifications: Measurement Range: 0-270°. Measurement Accuracy: +- 0.1°. Power Supply: 4 x AA 1.5 V LR6 Batteries (supplied) Arm Length: 60cm. Weight: 1.7kg.