Extra LCD is convenient to read. Small and light, it is real easy to be carried and used. Measuring plane contains disk magnet which can be attached to the surface to be measured. It is especially easy to easure the pitch of helicopter, bevel angle of miter saw, automobile test and repair and so on.     Accuracy: +/- 0.1 degree at 0 degree and 90 degree, +/- 0.2 degree at the rest angles     Resolution: 0.01 degree, Measures angle in degree (degrees)     Horizontal level measuring range: 0 to 360 degree (4*90 degree)          IP42 dust & water resistant     Working temperature: 0~40 Celsius     Colour: black + red     Material: ABS + electronic components     Size: 55x64mm          Package Contents:     1 x Digital Level Box     1 x User Manual          Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.