Master Rings

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• Lapped to size and polished. Non-gaging areas black oxidized - ring faces ground
• Meet all requirements of ANSI Specification B47.1-1988. Manufactured in accordance with ANSI Specification B89.1.6-1984.

Master Discs AGD Style 3

• Lapped to size and polished
• Meet all requirements of ANSI Specification B47.1-1988. Manufactured in accordance with ANSI Specification B89.1.5.

Master Plugs

• Stabilized and hardened.
• 100 % usable gaging surface
• Ends ground square, lapped finish