Although decimal values are allowed, it is more common to say that an object's value is between that of two reference materials based on the scratch test.
Alternatives to it include the Knoop test, the Vickers test, and measurement with a sclerometer ("sclair- AH-meh-tuhr"). Although decimal values are allowed, it is more common to say that an object's value is between that of two reference materials based on the scratch test. Corundum has a value of nine and talc has a value of one on, for 10 points, what scale that measures a mineral's hardness?
Alternatives to it include the Knoop test, the Vickers test, and measurement with a sclerometer ("sclair- AH-meh-tuhr").
{Mohs} scale