iGaging Digital Protractor with 7" and 4" Stainless Steel Bladed
2 Stainless steel rules with 7 Inch and 4 Inch blades with photo etched graduations inch and metric; Display reads continuously as arms are adjusted *Hold function so you never forget a measurement *Takes both 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 *Resolution: 0.05 degree (that's 5/100th of a degree!) Repeatability: 0.1 degree *Battery: 3V CR2032 with life of approximately 1 year and comes with an extra battery