Re: [CAD_CAM_EDM_DRO] Re: Autocollimators

Hi All:
About a year or so ago, there was a series in Model Engineer's Workshop
that described the building of an autocollimator from the scrapbox.
It appeared well laid out in that inimitable fashion that the Brits
have...lots of "whilst" and "shew" and, of course"bright mild steel".
It also appeared to be a decent instrument...not that I qualify as a
competent judge!
Cheers

Marcus

----- Original Message -----
From: "Les Watts" <leswatts@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, July 08, 2002 8:35 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Creating long straight edges


> > Doug,
> >
> > Thanks for the lab experiment. Reading your results along with Les'
> > insightful comments made me yearn for more info. [by the way Les, I
> > think your signature line should read: L M Watts Furniture and
> > Physics lab :<) ].
>
> Ha Ha well that is where I was at headquarters of a large corporation
> about 15 years. I still consult for them developing new technology.
> I try to mostly turn perfectly good wood in to sawdust now though.
>
> I think you really could make a fairly good autocollimator
> (laser or otherwise) from junk parts. The store bought ones
> go from $1000 to $30,000!! The best ones can do sub arc seconds.
>
> Les