[Tagging] weight limit in short tons

Paul Allen pla16021 at gmail.com
Sun Jan 27 01:45:13 UTC 2019


On Sun, 27 Jan 2019 at 00:49, Sergio Manzi <smz at smz.it> wrote:

> ... but now I have a doubt... I don't find any referenece... have I been
> pranked? :-/
>
I thought perhaps you had, because I couldn't turn up anything on a google
search.
Which is why I said I hadn't heard of it.   But I was puzzled when you
responded that
the imperial hundredweight was "112 lb 8 stones" so I checked.  And found
https://en.wikipedia.org/wiki/Hundredweight.  So you were right about the
cental.
Except in British English we used hundredweight in my youth because we had
never
heard of "centum weight" or "quintal."  And, to be honest, even
hundredweight
wasn't much used outside of people involved in bulk transportation of heavy
goods, so it was pretty much ounces, pounds, stones and tons for ordinary
people.

There are many more units of weight.  I dimly remember a very old Science
Fiction
story in which aliens failed to invade the Earth because they were confused
by all
the different units of weight involved.  I can't remember the name of the
story or the
author, but I can remember that one of the bizarre units was the catty.

This way madness lies.  Some of these bizarre units of weight are still in
use in
various parts of the world.  The link above has an image of a weight
restriction
sign on Alderney (not part of the UK but a Crown Dependency) of 30cwt.
Which
is imperial cwt (or centum weight) not US cental.  I'm seriously starting
to think
the wiki page adopted the most sensible strategy of saying that weights
should
be in metric units.

Except for one problem.  The various tons and hundredweights are not units
of
weight but of mass, so weight restrictions are given in mass units not
weight
units.  We should be specifying weight restrictions in Newtons, dynes
poundals and slugs.

OK.  Let's deprecate weight restrictions.  Change the wiki to say weight
restrictions
are not permitted. :)

-- 
Paul
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