Smooth Bore Ring Gages

.3112 MASTER PLAIN BORE RING GAGE .3125 -.0013 UNDERSIZE 5/16 8 mm - AR1908AG1

.373 CL X MASTER PLAIN BORE RING GAGE .3750 -.0020 UNDERSIZE 3/8 9.474 mm .3730 - MB2567AJ1

.121 CLASS X MASTER PLAIN BORE RING GAGE .1250 -.0040 UNDERSIZE 1/8 3 mm .1210 - MB2577AJ1

.376 CL X MASTER PLAIN BORE RING GAGE .3750 +.0010 OVERSIZE 3/8 9.550 mm .3760 - MB2566AJ1

.374 CL XX MASTER PLAIN BORE RING GAGE .3750 -.0010 UNDERSIZE 3/8 9.500 mm .3740 - MB2563AJ1

.311 CLASS X MASTER PLAIN BORE RING GAGE .3125 -.0015 UNDERSIZE 5/16 8 mm .3110 - MB2564AJ1

BROWN & SHARPE

.8125 MASTER PLAIN BORE RING GAGE ONSIZE 13/16 20.638 mm - MB2555AG1

.874 CLASS X MASTER PLAIN BORE RING GAGE .8750 -.0010 UNDERSIZE 7/8 22 mm .8740 - MB2553AG1

WOODWORTH

.7990 MASTER PLAIN BORE RING GAGE .7969 +.0021 UNDERSIZE 51/64 20.295 mm .799 - MB2554AG1

.3747 CLASS XX MASTER PLAIN BORE RING GAGE .3750 -.0003 UNDERSIZE 3/8 9.517 mm - MB2558AG1

.8735 MASTER PLAIN BORE RING GAGE .8750 -.0015 UNDERSIZE 7/8 22 mm - MB2556AG1

.7484 MASTER PLAIN BORE RING GAGE .7500 -.0016 UNDERSIZE 3/4 19 mm - AR1863AJ1