Manufactured in Germany. Professional instrument for all interior or exterior angles, roof pitches, staircase and balustrades, shower and window angles and steel fabrication angles. Measures 0-185°. Horizontal and vertical vials. 1 9V battery supplied. Protected On/Off switch. Precision angle finder — measures the exact angle of existing surface within 0.1′′. Simple mitre cut calculator — calculates the exact mitre angle needed for perfect fit of baseboard, picture frames and more. Compound cut calculator — calculates the exact mitre and bevel angles needed for a perfect fit of crown mouldings and more. Versatile memory — stores an angle measurement (such as crown moulding spring angle) and for repeated use. Protractor — positions work piece or intended cut line at exactly the desired. Level — built-in vertical and horizontal spirit levels, accurate to 0 +/- 0.05°. Digital readout displays on front for easy viewing. Can be used in any plane and will help find precise angles with ease. Excellent for setting up a saw, calculating the correct angle for a bend, or measuring an existing part.