On Sat, 28 Aug 2004 19:50:13 +0100, Steve Taylor
wrote:


Brian Manning, the man who built the "DIY" ruling engine still
has a website where it is discussed.

http://www.britastro.org/iandi/manning2.htm

Steve

Brian's a mate/buddy and I prepared including the text referred to, as
then BAA I&I webmaster, to resurrect the original SciAm articleg.

BTW - think I read all the messages but nobody said what they would
[politely!] do with said [printed] grating! A practical and easier
intermediate route eg stellar spectrum via diffraction, simple devises
like a tennis/badminton racket or a fine kitchen sieve work at

http://www.astroman.fsnet.co.uk/begin.htm

Maurice Gavin @ Worcester Park Ob - UK
www.astroman.fsnet.co.uk = home of practical amateur spectroscopy