Starrett RS 81.B Rec Steel Gage Block Set-Inch 81 Pcs Grade B

The Starrett RS 81.B MicroAccurate Rectangular INCH Gage Block Set contains 81 Blocks featuring 9 blocks .1001 through .1009 (Steps of .0001), 49 blocks .101 through .149 (Steps of .001), 19 blocks .050 through .950 (Steps of .050) and 4 blocks 1.000 through 4.000 (Steps of 1"). This set has B Accuracy Grade. Constructed of traditional high-grade Steel, which are generally used in shop floor environments. These B-Grade gage block sets are Starrett Global products. Their very affordable price makes them ideal for general shop floor use. Etched, unique serial numbers are included on each block. Custom numbers are not available. Inch System sets have a tolerance of ±50 µin . Metric System sets have a tolerance of ±1.25 µm .