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Re: [ATM] Spherometers and sphericity
Because you are looking for any area that may be out of spec. Since you don't know where they might be you want 1000's of samples. Sampling only a few places does not tell you the full story. So instead you scan as much as you can with points right next to one another. It would be very tedious to pick up and put down every fraction of an inch.
Dale Eason
----- Original Message ----
From: Norm Prince <princenorman@bellsouth.net>
To: Mike Lockwood <melockwo@uiuc.edu>; atm@atmlist.net
Sent: Wednesday, November 28, 2007 7:27:31 PM
Subject: Re: [ATM] Spherometers and sphericity
Just curious...why "slide" the thing around?...can you not pick it up and
gently place it somewhere else...then take a reading?...You still find out
what you want to know w/o pushing steel things around on your pretty, and
softer, glass surface.
-Norm Prince
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