Re: [ATM] Malacara, Flats etc... topic was "They come through for me, again"

[Gregg Swanson <Gregg.Swanson@microsoft.com>]

What is the new way of making and testing a flat without making three? I too would like a flat for testing purposes... and don't want to pay for one.  J

Gregg

From: Francis J. O'Reilly [mailto:foreilly@bestweb.net]
Sent: Wednesday, February 21, 2007 10:11 AM
To: Ken Hunter; Gregg Swanson; atm@atmlist.net
Cc: deena@bestweb.net
Subject: Re: Malacara, Flats etc... topic was "They come through for me, again"

Ken,

Thank you for your thoughts. I have received considerable correspondence from various members of the list advising me that I don't need three blanks to make a flat. Indeed, one friend has basically advised me that using three blanks to make a flat is the old way to do it and tedious.

I am now reconsidering the use of three blanks, but I still like the idea of having several flats for different purposes. I want one for a reference for a spherometer, although I am told that a flat is not necessary for that purpose, just a piece of float glass will do. I also want one for an autocollimator, which does require a flat.

Regards,

Francis J. O'Reilly
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