Fowler Inch 26 Leaf Set Tapered Thickness Gage Features: Each leaf of the thickness gage is made of fine tempered steel, hardened, Tapered thickness gage — Metric. 26 leaf set. . 0.0015, 0.002, 0.0025, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.010, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.020, 0.021, 0.022, 0.023, 0.024, and 0.025,. 3 Length,. The exact thickness is marked on each leaf. Steel case with lock nut.. Meets U.S. Federal Specifications. 52-485-006 Prop65 information pending -