Re: [ATM] Basic mirror support question...

["Jeff Baldwin" <bald@centurytel.net>]

I've always enjoyed talking to machinists about optical precision while 
observing their disbelief.  They have an idea of how small a millionth of an 
inch is, whereas most laypeople haven't a clue, it's just another small 
number.
Bald

Jeff and Glenda Baldwin
Beaver WA
http://home.centurytel.net/bald



> Note that 0.001 inch, a reasonably good machine shop tolerance for all
> but highly precise work, equals 25400 nanometers.  Thus, our mirror
> surface needs to be roughly 1000 times better than ordinary machine shop
> tolerances.  The tolerance on flexure is just as tight.  This factor of
> 1000 is where all the trouble originates.
>
> Jerry Reddell wrote:


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