You argue too much.
Isn't that what this forum is for ? :-)
I want
simple examples. I say use millimeter. Example: Say I build an
intersection of roads.
I agree completely with your example. Having mixed units on such a
drawing would be highly undesirable, and mm are the most appropriate
unit for your application. In fact, mm are the most appopriate unit for
the majority of industrial applications, and should be recommended to be
used *where it is reasonable to do so*.
How about the two simple examples I cited ?
(A) the requirement is to metricate public reports about people's height
(e.g. missing persons). Do you still say use millimeter ?
(B) the requirement is to standardize on sizes of pants [trousers],
using waist measurement. Do you still say use millimeter ?
As Stan said, this should depend on the standard practice manual for a
particular professional group, as only they know their industry well
enough to decide. For most of them, mm will be the preferred unit, but
I think it is premature to extend this to a "cm-bad-mm-good" generalization.
---------------------------------------------------------
Tom Wade | EMail: tee dot wade at eurokom dot ie
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