Inch

G.A. CO.

1 1/8 24 NS SPECIAL THREAD RING GAGES 1.125 GO NO GO P.D.'S = 1.0916 & 1.0874

G.A. CO.

1 1/8 24 UNS 2A PREPLATE THREAD RING GAGES 1.125 GO NO GO PDS= 1.0948 1.0912 B/P

11/16 16 NS THREAD RING GAGES .6875 GO NO GO P.D.'S = .6469 & .6424 11/16-16

ATLAS

1 1/8 6 NA 2G NATIONAL ACME THREAD RING GAGE 1.125 GO ONLY P.D. = 1.0332 1.25-6

G.A. CO.

6 32 UNC 2A EXTRA THICK THREAD RING GAGE #6 .138 GO ONLY P.D. = .1169 DEEPWELL

G.A. CO.

1/2 20 UNF 3A EXTRA THICK THREAD RING GAGE .5 GO ONLY P.D. = .4675 DEEPWELL

3/4 20 NEF BEFORE PLATE THREAD RING GAGE .75 GO ONLY P.D. = .7163 NON STD. B/P

GTD

7/8 20 USF THREAD RING GAGE .875 GO ONLY P.D. = .8425 U.S.F. .8750-20 INSPECTION

11/16 16 NS THREAD RING GAGE .6875 GO ONLY P.D. = .6495 11/16-16 NS-2 NS-3 UNS

S.C.C.

3/8 16 UNC 2A PREPLATE THREAD RING GAGES .375 GO NO GO P.D.'S= .3319 & .3275 P/P

CERTIFIED 3/8 16 UNC 3A THREAD RING GAGES .375 GO NO GO P.D.'S = .3344 & .3311

GAGE ASSEMBLY CO.

CERTIFIED 3/8 24 UNF 3A LEFT HAND THREAD RING GAGES .375 GO NO GO= .3479 & .3450