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

["Francis J. O'Reilly" <foreilly@bestweb.net>]

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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