11" Electronic Digital Protractor Goniometer Angle Finder Miter Gauge Ruler Resolution: 0.05 Degree Accuracy: +/- 0.5 Degree Repeatability: 0.1 Degree 2 Rulers With 10" And 8" Marked Blades With Etched Graduations In Mm, 1/16", 1/32" And 1/64" Display Reads Continuously As Arms Are Adjusted Hold Function So You Never Forget A Measurement For Inside And Outside Angle Measurements Large Clear LCD Display Strong Blade Lock Holds Securely For Transfer Of Measurements Reversible Reading That Allows You To Flip The Display Reading To Right Side Up Measure Range: 0-360 Degrees Powers Off After 5 Minutes Of Nonuse Batteries Not Included Battery Required: (1) 3V CR2032 Qty: 1 Light Item