Proper Poundage for Checking XX Tolerance Plain Plug Gages?

G

gagelabpat

#1
I'm rather new to the calibrating scene and have a question concerning checking XX tol plain plug gages. Our company procedure doesn't specify what poundage should be used when checking plain plug gages. I'm sure it is going to make a difference in trying to obtain an accurate size. Our Brown & Sharpe supermic has the capability to adjust the poundage, but no one here knows what it should be set to! Any guidance is greatly appreciated, thanks!
 
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G

Grizz1345

#2
Good Morning,

If you look on page 167 of ANSI/ASME B1.2-1983 Reaffirmed 1991 you will find that paragraph A4.1.2 deals with this issue. It states that gage pins be checked at 1 pound. Granted this paragraph is talking about X and Y class,:cool: it stands to reason that if 1 pound is as light as your mic will go then all pin gages would check at 1 pound.

Hope this helps.
 
G

gagelabpat

#3
Yes, this helped greatly. A little more research (it took a while to find the right person!) in our database came up with the old MIL Std our procedure was based on basically says the same thing, 1 pound of indicator pressure for plain plug gages, unless the plug is over 3 1/2" then use 2 1/2 pounds.

Thanks for the quick reply!!! :agree1:
 
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