Bosch GIM 60 L Pro Incline Measurer with integrated point laser for incline measurement up to a distance of 30m. Fitted with strong magnets and two straps for securely fastening the instrument to workpieces. There is also an incline mechanism for fine adjustment on uneven surfaces. Specifications: Length: 60cm. Measurement Range: 0 - 360° (4 x 90°) Electronics Measurement Accuracy: @0°/90° +- 0.05°, @1-89° +- 0.2°. Laser Range: 30m. Laser Levelling Accuracy: +- 0.5mm/m. Laser Type: 635 nm, < 1 mW. Laser Class: 2. Units of Measurement: °, %, mm/m. Power Supply: 4 x AA 1.5 V LR6 Batteries (supplied) Tripod Thread: 1/4in. Weight: 0.91kg.