Linear Measuring Range: 0-13mm Radius Measuring Range: 5-700mm Linear Deviation: S0.02mm Radius Deviation: R(0.02/2)R Battery: 3V CR2032 environmental lithium battery (Battery is not included, as it is forbidden by air.) Feature While measuring the radius of arc, measuring it using "R" gauges commonly. But application range of "R" gauges is limited, because it only measures standard radius of arc, and getting data from comparison measurement, so can't getting accurate data of workpiece. Multi-indicators can measure random radius of arc, apply for measurement radius of arc and plastic mould manufacturing. Multi-indicators have five different length measuring jaws, for choose corresponding measuring jaws, while measuring arc face. Multi functions: (1) Application as indicators; (2) Outside measurement; (3) Inside measurement; (4) Depth measurement; (5) Step measurement. Package Includes 1 x Digital Radius Gauge Indicator Set