pcplantdb

["Lawrence F. London, Jr." <lfl@intrex.net>]

> webmaster@pfaf.org wrote:

> > Out of interest I'm working on an article on Yeomans Keyline planning system
> > http://en.wikipedia.org/wiki/Keyline_Planning
> > your welcome to contribute.

Speaking of plows have a look at this one which is a type I have never seen 
before. Can you imagine the effect achieved
if you added 3 offset, in line, Yeomans plows to each disk gang, preceeding 
each of them? The mind staggers.

http://upload.wikimedia.org/wikipedia/commons/8/8a/Agriculture_%28Plowing%29_CNE-v1-p58-H.jpg


Rich:

You you know of a quick reference guide to using trig in the shop,
specifically how to enter data and commands into a HP or TI calculator to 
find angles and sides in a triangle?

LL