Runout vs. Flatness and Dial test indicators

[Jay West]

If I recall (been a while since I've seen this thread and I *THINK* I
started it)...

runout would be measured against the outside rim of the platter, thus
checking for a platter that is mounted off-center.

flatness would be measured against the outer top surface of the platter,
thus checking for a platter that is mounted "at an angle".

Jay
----- Original Message ----- 
From: "Kevin Teoh" <kevintct at streamyx.com>
To: <cctech at classiccmp.org>
Sent: Monday, September 06, 2004 4:25 PM
Subject: Runout vs. Flatness and Dial test indicators


> just would like to enquire..
> Is the DTI reading for run-out the difference between the high and low
limits or is it the average of the difference
>