Smooth Bore Ring Gages

.6480 CL X MASTER PLAIN BORE RING GAGE .6563 -.0083 21/32 16.459 mm .648 - SR0068BS3

.8770 CL XX MASTER PLAIN BORE RING GAGE .8750 +.0020 OVERSIZE 7/8 22.276 mm .877 - SR0067BS3

.8391 CL XX MASTER PLAIN BORE RING GAGE .8438 -.0047 UNDERSIZE 27/32 21.313 mm - SR0066BS3

.7218 CLASS X MASTER PLAIN BORE RING GAGE .7188 +.0030 OVERSIZE 23/32 18.334 mm - SR0065BS3

.6360 CLASS X MASTER PLAIN BORE RING GAGE .6250 +.0110 OVERSIZE 5/8 16 mm .636 - SR0064BS3

.7517 CLASS XX MASTER PLAIN BORE RING GAGE .7500 +.0017 OVERSIZE 3/4 19 mm - SR0063BS3

.7361 CLASS X MASTER PLAIN BORE RING GAGE .7344 +.0017 UNDERSIZE 47/64 18.697 mm - SR0062BS3

2.0050 CL XX MASTER PLAIN BORE RING GAGE 2.0000 +.0050 OVERSIZE 2.0 51 mm 2.005 - SR0050BS3

1.5005 CLASS X MASTER PLAIN BORE RING GAGE 1.5000 +.0005 OVERSIZE 1 1/2 38 mm - SR0059BS3

.8553 CLASS XX MASTER PLAIN BORE RING GAGE .8438 +.0115 OVERSIZE 27/32 21.725 mm - SR0060BS3

2.0020 CL XX MASTER PLAIN BORE RING GAGE 2.0000 +.0020 OVERSIZE 2.0 51 mm 2.002 - SR0058BS3

2.5070 CL XX MASTER PLAIN BORE RING GAGE 2.5000 +.0070 2 1/2 63.678 mm 2.507 - SR0057BS3