The Mini-Mag Protractor provides instant 360° digital inclination display of any angle with the additional unique feature of embedded magnets on two sides which make it ideal for chasis and camshaft alignment. Voltage standard: 9 volt battery (250 hours). Embedded magnets with 35lb. pull, measuring range: 360° (4 X 90°), resolution: .05°, accuracy: +/- .1°, repeatability: +/- .1° We ship APO, International and do combine shipping. Check out my other items! Sign up for my email newsletters by adding my eCRATER Store to your Favorites