Description: 100% High quality and Brand new Feature 0-320 degree measuring range, stainless steel material , 2' graduation. Great for measuring inner and outer angles of the parts. Furnished with a bevel edged extension blade, roller knob and fine adjustment. Used when measuring and marking a top quality unit. Specification: Material: High Carbon Steel + Plastic Color: As Picture show Size: Approx. 151x140mm/5.94x5.51inch Angle Rangle: 0~320 Degree Package Includes: 1 piece Bevel Protractor Note: Pls allow an error of 1-3mm due to the difference of manual measurement