Has a range of ±45° capacity of 0-360° using all four bases and a resolution of 0.01° selectable. Uses standard 1.5V AA batteries. Interface connection RS485 is integrated. Has low battery indication and built-in calibration. Dimensions: 4 x 3 x 1″(100 x 75 x 30mm). Weight: 13 oz.(380 grams). Temp. range: operational 0 to 40°C. Sensitivity: Depending on units set— .01°. Repeatability: <.01°. Linearity: within 3 min. of arc.