GemRed 82305 Digital Angle Finder 7-Inch Protractor (200mm Stainless Steel Angle Finder Ruler) Ruler and protractor combination for easy measuring. Durable stainless steel body provide years' using. *Stainless steel edge is sharp, please be cautious while using. Quick and clear digital readout. Accuracy 0.3; resolution 0.1. Total length 400mm. Zeroing at any angle for relative measuring. Locking screw for holding any angle. Working with one piece of CR2032 coin battery. *SCRATCHES ON RULERS ARE RESULTED FROM TOUCHING WITH EACH OTHER. IT MAY APPREAR ON BRAND-NEW PRODUCT. This angle finder ruler could both measure angle and length, metric and imperial scale. Woodworking: adjusting anglesof table saw, miter saw, band saw etc. Construction Sketching, drawing Measuring angles quickly with accuracy of 0.3 degree. Digital readout displays angle in 1-decimal. Easy operation with only two buttons. Good locking function could lock the measurement at any angle. Compact structure to achieve convenient carrying and using. Rulers of this digital angle finder made by durable brushed stainless steel. The angle findercould be well used to various fields instead of angle ruler, straight ruler and square ruler etc. Easily drawing line with the stainless steel rulers. Item No. 82305 Measuring range: 0~999.9 Resolution: 0.1 Accuracy: 0.3 Folded length: 220mm/8.5 inch Expanded length: 400mm/15.75 inch Ruler measurement range: 0~400mm;0~7 inch Measurement: laser-etched Working temperature: 0~50 Working humidity: 85%RH Battery: CR2032 3V lithium battery Package include: 82305 stainless steel protracor*1, instruction*1, CR2032 battery*1, color box*1, transparent insert*1, desiccant*1(keep it away from kid and throw away)