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Re: [ATM] WAS Magnalium....


--- David Harbour <scarab2@cox.net> wrote:
> As per my earlier post, Cary,
> 
> Try autocollimation with a pan of quicksilver or
> oil. 
snip
> G.W.R's
> favorite method; but he was talented enough to
> produce a big flat instead of
> having to mess around with oil or mercury.
> 
 
Aren't quicksilver and mercury the same thing?
Getting mercury these days in quantity is harder than
buying a ton of dynamite.

Ken Hunter




		
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