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> Anybody with a better idea for a hardness scale?
At the risk of sounding silly, keep the "KISS" principal ("Keep It
Simple, Stupid...", and no, I'm not calling anyone stupid. That's
just the accepted acronym) in mind. I see no reason why those
Sclerometer readings need to be converted to a logrithmic scale.
Sure, it makes the numbers amaller, but it also makes them harder to
interpret, less intuitive. Why not just keep the raw measurement data
as is? I see no problem in listing the hardness of diamond as Scl
(Sclerometer, or whatever shorthand notation for that instrument is
appropriate) 140,000. The more pressing question, I should think, is
to determine the best type of instrument to use to make the
measurements. hardness can be measured in a number of ways, giving
somewhat varying results. It seems to me the most important question
is to decide which means of measuring a stone's hardness most closely
paralells the observed behavior of that stone in the uses we make of
it, so the hardness figure we state is the most accurate statement of
the stone's hardness in real life situations.
Peter Rowe
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