Smooth Bore Ring Gages

.4388 CLASS XX MASTER PLAIN BORE RING GAGE .4375 +.0013 OVERSIZE 7/16 11 mm - CM0090CP2

.49988 MASTER PLAIN BORE RING GAGE .5000 -.0001 UNDERSIZE 1/2 12.697 mm - CM0094CP2

.2390 MASTER PLAIN BORE RING GAGE .2500 -.0110 UNDERSIZE 1/4 6 mm .239 - CM0093CP2

.3760 CL X MASTER PLAIN BORE RING GAGE .3750 +.0010 OVERSIZE 3/8 9.550 mm .376 - CM0092CP2

71.922 CLASS Z MASTER PLAIN BORE RING GAGE 72.000 -.078 UNDERSIZE 72 mm 2.8316 - DW21165BW2

2.5710 CL X MASTER PLAIN BORE RING GAGE 2.5625 +.0085 2 9/16 65.303 mm 2.571 - DW21155CP2

4.0040 CL XX MASTER PLAIN BORE RING GAGE 4.0000 +.0040 4.0 101.702 mm 4.004 - DW21159CD2

2.5100 CL XX MASTER PLAIN BORE RING GAGE 2.5000 +.0100 2 1/2 63.754 mm 2.510 - DW21169AW2

68.023 CLASS Z MASTER PLAIN BORE RING GAGE 68.000 +.023 OVERSIZE 68 mm 2.6781 - DW21163BW2

3.2630 CL X MASTER PLAIN BORE RING GAGE 3.2656 -.0026 3 17/64 83 mm 3.263 CHECK - DW21158CD2

79.965 CLASS Z MASTER PLAIN BORE RING GAGE 80.000 -.035 UNDERSIZE 80 mm 3.1482 - DW21167BW2

2.56115 CLASS X MASTER PLAIN BORE RING GAGE 2.5625 -.0013 UNDERSIZE 2 9/16 65 mm - DW21157CD2