Richard fired this volley in
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That's why we invented drawing - first.

Not for nothin', but if someone cannot read or communicate well enough to
convey units and dimensions, a drawing does no good beyond conveying a
general idea.

Better than 70% of our population cannot read a ruler! What good would
it do to make a drawing with a specification of "11-7/8", if someone
cannot discern on a ruler what 7/8" IS?

If you doubt that, just watch a home being built (if you can find one,
these days).

LLoyd