Stabila 80A-E-30cm Electronic Level uses audio angle guidance system with 3 different signals You can align items without looking at the vial The easy-to-read digital display - automatically rotates for overhead measurements Features 1 horizontal vial Reference angle mode allows you to take an angular measurement store it and transfer it to other components Available units are degree percentage mm m and inft With its light metal rectangular profile its perfect for your tool bag Vial measuring accuracy in the normal position 0029° 05 mm m overhead measurement 0043° 075 mm m Electronic inclination accuracy at 0° and 90° ± 005° from 1° up to 89° ± 02° Length 300mm 12 in