The Brown & Sharp taper is used on cutting tools including end mills and reamers. The taper is approximately ½ inch per foot for all sizes except for taper #10 which is .5161 inches per foot. Brown & Sharpe taper sockets are specified on arbors, collets, and machine tool spindles. The lengths of the sockets vary in many cases corresponding to the same number of taper but have the same diameter at the small end. Thread Check Inc. designs and builds custom tapered plug gages for a wide range of industries and applications. Other types of tapers include medical luer tapers, Cat V Flange Tapers and Steep Machine Tapers.