1/2

G.A. CO.

1/2 20 UNF SPECIAL THREAD RING GAGES .5 GO NO GO P.D.'S = .4710 & .4685 1/2-20

G.A. CO.

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

PIPE MACHINERY CO.

1/2 50 UNS 2A THREAD RING GAGES .5 GO NO GO P.D.'S = .4860 & .4827 1/2-50 NS-2A

MERCURY

1/2 13 NC SPECIAL PITCH THREAD RING GAGE .5 NO GO ONLY P.D. = .4500 .50-13 0.500

GAGE ASSEMBLY CO.

1/2 10 ACME 2G LEFT HAND THREAD RING GAGES .5 GO NO GO PDS = .4443 & .4306 NA-2G

G.A. CO.

1/2 18 NS 3 THREAD RING GAGES .5 GO NO GO P.D.'S = .4639 & .4609 .50-18 NS-3

HANSON WHITNEY

1/2 27 NS 3 THREAD RING GAGE .5 NO GO ONLY P.D. = .4733 .50-27 NS-3 INSPECTION

1/2 20 NF 4 THREAD RING GAGE .5 GO ONLY P.D. = .4678 QUALITY INSPECTION .50-20

PONAM

1/2 10 STUB 60 DOUBLE LEAD THREAD RING GAGES .5 GO NO GO P.D.'S = .4551 & .4496

1/2 13 STUB 60 THREAD RING GAGE .5 NO GO ONLY P.D. = .4496 INSPECITON .500-13

THE SHEFFIELD CORP.

1/2 24 NS 2 THREAD RING GAGE .5 NO GO ONLY P.D. = .4689 1/2-24 NS-2 INSPECTION

G.A. CO.

1/2 20 UNF 3A SPECIAL THREAD RING GAGE .50 NO GO ONLY P.D. = .4643 1/2-20 UNF-3A