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On 03/02/2013 14:09, Peter Lloyd-Jones wrote: > On 1 February 2013 17:15, e-mail greybear2k5 > <greybear2k5@xxxxxxxxxxxxxxxx <mailto:greybear2k5@xxxxxxxxxxxxxxxx>> wrote: > > I have a 40 year old working analogue computer, results are not too > precise but near enough for many uses. > It's called a slide rule. > There is working slide rule in Edinburgh about 400 years old it is called Napier's bones. ( I was allowed to handle a set in my student days.) link http://en.wikipedia.org/wiki/Napier%27s_bones But like other's I fancied a cylindrical one. -- Regards Eion MacDonald -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq