Inch

PRATT & WHITNEY

3/8 27 NS THREAD RING GAGE.375 NO GO ONLY P.D. = .3487 QUALITY 3/8-27 SHOP TOOL

11/16 32 UNS 2A THREAD RING GAGE .6875 NO GO ONLY P.D. = .6632 QUALITY NS-2A

SOUTHERN GAGE CO.

7/8 9 UNJC 3A THREAD RING GAGE .875 NO GO ONLY P.D. = .7981 QUALITY 7/8-9 TOOL

PONAM

1/2 10 STUB 60 DEGREES THREAD RING GAGE .5 GO ONLY P.D. = .4551 QUALITY 1/2-10

G. WHALLEY

1/4 72 UNS 2A MODIFIED THREAD RING GAGE .250 NO GO ONLY P.D. = .2375 1/4-72 TOOL

PRATT & WHITNEY

1 64 UNC 3A THREAD RING GAGES #1 .073 GO NO GO P.D.'S = .0629 & .0614 TOOL #1-64

PRECISION

5/16 50 NS 3 THREAD RING GAGE .3125 GO ONLY P.D. = .2995 QUALITY 5/16-50 TOOL

1/4 18 THREAD RING GAGE .25 GO ONLY P.D. = .2240 QUALITY INSPECTION 1/4-18 TOOL

HANSON - WHITNEY

5/16 18 NC 4 W THREAD RING GAGE .3125 GO ONLY P.D. = .2767 QUALITY 5/16-18 TOOL

VERMONT

1/4 28 UNF 3A VERMONT THREAD RING GAGE .25 NO GO ONLY P.D.= .2243 QUALITY 1/4-28

1/4 32 NEF SPECIAL P.D. THREAD RING GAGE .25 NO GO ONLY P.D. = .2290 QUALITY

THREADWELL

1/4 48 NS 2A LEFT HAND DOUBLE LEAD THREAD RING GAGE .25 GO ONLY P.D.= 2357 L.H.