In message , charles
writes
In article MTsXj.145740$Cj7.35522@pd7urf2no,
Don Kelly wrote:



In the early '50's there were two other units around- the poundal (1/g
pounds force) or a mass called a slug (g pounds mass). Learning
mechanics with these units (don't use them together)is worse than
working in the stone, furlong, fortnight set of units. The poundal was
introduced in 1879 as part of the "english set of units" (Wikipedia is
sometimes useful).

I certainly remember the poundal.

The various old english measures: chain, rod, quarter, peck, etc, were, of
course, very useful to teach children arithmetic since they all came with
different bases.

and of course you can measure viscosity in Acres per year - if you want to.

You forgot the poles and perches, the bushels, and of course, the LSD.
--
Ian