2 In 1 Digital Protractor - Measure Not Only The Length, But Also The Angle of 360 (Inside Angle, Outside Angle). Locking Function Use Locking Screws to Lock Both Feet In The Desired Position Or Angle. Large 1 "Lcd - Lcd with Electronic Digital Display, You Can Switch Between Degrees And Minutes with The "/" Button The Hold Button Stores Data During Measurement, The On / off / Zero Button Res The Data to Zero By Briefly Pressing Any Angle Angle Lock Button for Each Angle. Length, Width And Precision Length Measurement: 400 Mm Measuring Angle: 000.0 ~ 999.9 Precision 0.3 Resolution: 0.1 Measuring Range: 0-360. The Body Is forged from High Quality Stainless Steel, Which Guarantees Quality, Corrosion Resistance And Durability. Excellent Quality - The forged Scale of Premium Stainless Steel Is Serious Laser (Mm And Inch Scale), Abrasion And Corrosion Resistant. High Quality Service If You Have Any Questions About Use, Installation And Product, You Can Contact Customer Service Any Time. We Will Solve The Problem with in 24 Hours. The May Be A Little Sharp, Please Wear When Using It.