300mm/200mm 7"/11" Digital Angle Ruler Transparent Inclinometer Goniometer Protractor Angle Finder Measuring Tool Features: - Good Quality: Adopts super-strength transparent engineering material, which has good rigidity, wear resistance, no deformation, no hand stroke, light and durable. - Friendly Design: Increase the thickening knob, it is easy to measure, and the measurement is convenient and reliable. - 2 Angle Unit: degree and degree of random conversion - 2 Length Unit: metric inch double scale line on the transparent ruler is striking and generous for easy reading. - Clear Funciton: It can be cleared at any position to facilitate absolute and relative measurements. - Data Hold: Data can be held in any position for easy reading after measurement. - Automatic Power-off , Power Supply CR2032 3V button battery (included) - Flat Back: easy marking and measurement. - High Precision: Resolution(0.05/3') , Precision(0.5) - Application: Widely used in hospitals, wood furniture, building materials decoration, school teaching aids, student stationery, home DIY, mechanical processing and other fields Package included: 1 * Digital Angle Ruler