A quality THIRTY TWO blade feeler gauge. Manufactured from heat treated carbon steel for added longevity and durability. Individual markings in both metric and imperial measurements. Size of Blades: 0.0015" / 0.038mm; 0.002" / 0.051mm 0.025" / 0.063mm; 0.003" / 0.076mm 0.004" / 0.102mm; 0.005" / 0.127mm 0.006" / 0.152mm; 0.007" / 0.178mm 0.008" / 0.203mm; 0.009" / 0.229mm 0.010" / 0.254mm; 0.011" / 0.279mm 0.012" / 0.305mm; 0.013" / 0.330mm 0.014" / 0.356mm; 0.015" / 0.381mm 0.016" / 0.406mm; 0.017" / 0.432mm 0.018" / 0.457mm; 0.019" / 0.483mm 0.020" / 0.508mm; 0.021" / 0.533mm 0.022" / 0.559mm; 0.023" / 0.584mm 0.024" / 0.610mm; 0.025" / 0.635mm 0.026" / 0.660mm; 0.028" / 0.711mm 0.030" / 0.762mm; 0.032" / 0.813mm 0.035" / 0.889mm Brass Blade 0.010" / 0.254mm.