Smooth Bore Ring Gages

.4000 CL X MASTER PLAIN BORE RING GAGE .4063 -.0063 UNDERSIZE 13/32 10 mm .400 - BT3780AC4

.6150 CL XX MASTER PLAIN BORE RING GAGE .6250 -.0100 5/8 15.621 mm .615 CHECK - BT3765AC4

.1975 CLASS X MASTER PLAIN BORE RING GAGE .1875 +.0100 OVERSIZE 3/16 5 mm CHECK - BT3769AC4

.2493 CL XX CARBIDE MASTER PLAIN BORE RING GAGE .2500 -.0007 1/4 6.332 mm CHECK - BT3776AC4

.4990 CL XX CARBIDE MASTER PLAIN BORE RING GAGE .5000 -.0010 1/2 12.675 mm .499 - BT3764AC4

.1881 MASTER PLAIN BORE RING GAGE .1875 +.0006 OVERSIZE 3/16 4.778 mm CHECK - BT3775AC4

.1250 CLASS X CARBIDE MASTER PLAIN BORE RING GAGE ONSIZE 1/8 3 mm .125 CHECK - BT3768AC4

.1248 CL XX CARBIDE MASTER PLAIN BORE RING GAGE .1250 -.0002 UNDERSIZE 1/8 3 mm - BT3772AC4

.7280 CL X MASTER PLAIN BORE RING GAGE .7188 +.0092 23/32 18.491 mm .728 CHECK - BT3763AC4

1.74635 CL XX MASTER PLAIN BORE RING GAGE 1.7500 -.0036 1 3/4 44.357 mm CHECK - BT3808AL4

.1250 MASTER PLAIN BORE RING GAGE ONSIZE 1/8 3 mm .125 INSPECTION CALIBRATION - BT3773AC4

.6254 MASTER PLAIN BORE RING GAGE .6250 +.0004 OVERSIZE 5/8 16 mm INSPECTION - BT3771AC4