Clue: Hardness scale
We have 1 answer for the clue Hardness scale. See the results below.
Possible Answers:
Related Clues:
- ___ scale
- Kind of scale
- Eponymous German mineralogist
- Mineral hardness scale inventor
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- Mineral hardness scale inventor Friedrich
- Talc-to-diamond scale
- ___ scale (mineral hardness measure)
Last Seen In:
- USA Today - March 23, 2016
- Universal - March 08, 2016
- Universal - March 20, 2015
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