-----Original Message-----
From: Randall Young <ryoung@NAVCOMTECH.COM>
To: Phil Ethier <pethier@isd.net>; mcgibney <mcgibney@attcanada.ca>;
Triumphs Mailing List <triumphs@autox.team.net>
Date: Saturday, October 27, 2001 4:11 PM
Subject: RE: tool hunting
>>
>> "T" gauges and inside micrometers measure only two points, or a simple
>> diameter. If you have three-lobe or five-lobe out-of-roundness,
>> you can miss
>> it using these tools.
>
>Well perhaps, except the same thing is true of a dial bore gage. It
>measures 3 points, so if you're on the peaks of a 3-lobe, you could still
>miss it.
That's the whole point. You don't just measure once if you are looking for
out-of-round. Measuring with a 3-point bore gage several times, rotating
the gauge will point up a three- five-lobe out-of-round condition.
Phil Ethier Saint Paul Minnesota USA
1970 Lotus Europa, 1992 Saturn SL2, 1986 Suburban, 1962 Triumph TR4 CT2846L
LOON, MAC pethier@isd.net http://www.mnautox.com/
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