Inch

WAFCO

15/16 12 UN 3A THREAD RING GAGES .9375 GO NO GO P.D.'S = .8834 & .8792 N-3A

DOALL

2 5/16 16 N 3A THREAD RING GAGES 2.3125 GO NO GO P.D.'S = 2.2719 & 2.2678 UN-3A

SWANSON

1/2 6.5 NA 2G ACME MOD. THREAD RING GAGE .5 6 1/2 .500 GO ONLY P.D. = .4443

MERCURY

3/4 16 UNRF 2A MOD THREAD RING GAGES .75 GO NO GO P.D.'S = .7067 & .7021 NON-STD

GTD

1/4 24 NS 2 THREAD RING GAGES .25 GO NO GO P.D.'S = .2229 & .2196 UNS-2 TOOL

HANSON-WHITNEY

7/8 18 NS THREAD RING GAGES .875 GO NO GO P.D.'S = .8374 & .8343 UNS QUALITY

PONAM

1 1/16 18 UNEF 3A LEFT HAND THREAD RING GAGES 1.0625 GO NO GO PDS= 1.0264 1.0228

11/16 26 UNS 2A THREAD RING GAGES .6875 GO NO GO P.D.'S = .6613 & .6674 NS-2A

7/16 48 NS 2 THREAD RING GAGES .4375 GO NO GO P.D.'S = .4240 & .4206 UNS-2 TOOL

RUTLAND

13/16 18 NS 2A SPECIAL THREAD RING GAGES .8125 GO NO GO P.D.'S = .7750 & .7713

PRATT & WHITNEY

1/2 48 NS 2 THREAD RING GAGES .5 GO NO GO P.D.'S = .4865 & .4831 UNS-2 TOOL

GODWIN

2 1/8 12 UN 2A THREAD RING GAGE 2.125 NO GO ONLY P.D. = 2.0774 N-2A QUALITY