TINVHY 12-Pack Steel Angle Gauge Block Set with Case, Machinist Angle Plates Tool Lathes Milling Ground Gauge Angle Calibration Gage Inspection Block Set

Accuracy: +/- 0.0001 per inch. Includes: 1/4, 1/2, 1, 2, 3, 4, 5, 10, 15, 20, 25, and 30-degree hardened-steel blocks. For angle set-ups in tooling, productions, and inspection. Hardened and precision ground. 0.25 thickness; Hardened steel material; Precision grinding; +/- 20 Seconds, 0.0001 per inch high precision. Perfect for machinists and metalworkers; measure angles with maximum precision. Hard-shelled carrying case keeps the blocks organized and protected from contaminants.