[tech-3d] Re: Tri-Delta type attachment - build article as .pdf file

[CanterMike@xxxxxxx]

I would like to thank Alan for posting the John Ralph 
article.  I'm not sure what problems others may have had 
but I was able to download the article with out any trouble 
at all.

I note, however, that this article is more of a review than a 
set of construction instructions and refers to the Eddie Butt 
article in the October 1996 Journal.  Is anyone in the position 
to scan and post that article?

Also does anyone have the specifications for the prism referenced 
at the end of the Ralph article?  I was unable to find out anything 
useful from the Philip Harris webpage.  A reference to the Edmund 
Scientific part number would be quite helpful.

Thanks, 

Mike Canter


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