OK, so I realise that nobody else is going to be nearly as excited about 
this as I am, but... after about an hour of PostScript coding, I was 
able to construct a nomogram that correctly expresses the relationship 
"X+Y=Z".

That is, pick any pair of variables, pick values for these, draw a 
straight line such that it passes through the values you picked on the 
appropriate axies, and the point where it passes through the third axis 
indicates the correct value for the third variable.

That was *so* worth it, eh? ;-)

Most of the hour was spent tracking down glitches in my PostScript 
coding (e.g., making a loop count from 100 to 1 in steps of +1), and 
tweaking the asthetics of the page (I know, I'm fussy).

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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