● Size: Length 3ʺ × width 1-3/16ʺ. ● Size of angle:1/2°. 1°. 2°. 3°. 4°. 5°. 10°. 15°. 30° ● Precision:± 10ʺ ● Material:S50C. Hardness:HRC50°~55° ● Weight:1.7kg