Precise digital measuring in degrees, percent, or inches/feet Absolute and relative angle measurement Range of display is between 0° and 90° LED back-lit display with audible sound Rugged with aluminum construction Hold/lock measurement feature Horizontal and vertical measuring accuracy of &plusm;0.1° Back-Lit Display rotates when measuring overhead. 24? (62cm) 0?360° (4 x 90°) 0° and 90°, &plusm;0.1° ; -1° to 89°, &plusm;0.2° 2 x AAA Alkaline Batteries 32° F ... 104° F (0°C ... +40 °C) 1.34 lb (610g) 23.7? x 2.6? x 1.2? (62 x 6.6 x 3 cm) Digital Level, Batteries, Carrying Case, User Manual