Description: 2 in 1 200/300mm Transparent Digital Angle Ruler 360° LCD Display Inclinometer Electron Goniometer Protractor Angle Finder Meter Inch Metric Ruler Measuring Tool. Specifications: Material: Transparent Engineering Materials. Color: Transparent + Red. Measuring range: 0-360 °. Length Measuring Range: 0-200mm / 0-300mm. Ruler Scales: Inch and Metric. Resolution: 0.05°/ 3'. Measurement Accuracy: 0.5°. Battery: CR2032 3V. Usages: Measurement of angle and length. Button Function: open / key, clear key, data hold button, degree and degree conversion button. Features: - Digital display: instant and clear digital readout for easy viewing. - Transparent ruler, metric-inch double system, easy to read. - With automatic power off function, save energy consumption, extend battery life. - Any position can clear zero, convenient absolute measurement and relative measurement. - Data can be held to facilitate the measured reading. - Wide applications: hospital, woodworking, building materials, school teaching AIDS, student stationery and mechanical processing ect. Pacakge Included: 1 x Digital angle ruler