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Old February 23rd 18, 05:50 PM posted to rec.bicycles.tech
Jeff Liebermann
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On Fri, 23 Feb 2018 13:08:13 +0100, Emanuel Berg
wrote:

Jeff Liebermann wrote:

There's a bit of a muddle over the term
durometer. Some say it's the units of
measure, some say it's the name of the
instrument, and some say it's both.
Methinks it's the instrument name.


Sure sounds like it. But I suppose it could be
a unit as well only first time I ever heard of
it was in the context of a thing or gadget, at
least that was the way I read it.

"Use the durometer to determine the durometer!"


If you parse the word into duro meter, it is somewhat obvious that it
refers to the instrument, not the units of measure. The problem is
that the industry was not prepared for the lack of units of measure.
There are plenty of measurements that have no units, such as ratios,
proportions, indexes, modulus, mean opinion score for VoIP
intelligibility, etc.
https://en.wikipedia.org/wiki/Dimensionless_quantity
That worked fine, until it hit the automotive industry, which was not
quite accustomed to the concept. It sounded rather odd that a measure
of rubber hardness should not have some unit of measure, usually named
after the inventor or internationally, after a famous dead scientist.
Normally, it would be called XX shore units or something similar, but
not this time. Also normally, a standards committee would be assigned
to sort this out, but apparently they're too busy creating new
standards than to fix the existing ones.

However, all is not lost. This article proclaims that:
https://en.wikipedia.org/wiki/Shore_durometer
The term durometer is often used to refer to the
measurement as well as the instrument itself.
Therefore, on the authority of the Wikipedia authors and editors, you
are allowed to perpetuate the muddle.

Before you ask, zero durometer means that you punched a hole in
material under test and 100 means that the indenter needle didn't
move.
--
Jeff Liebermann
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