Hardness Scale, large in wooden box
Product number:
I130
Product information "Hardness Scale, large in wooden box"
Standard hardness scale with nine minerals in well-measured samples.
Supplied in a sturdy wooden storage case.
Dimensions: 23 x 13 x 6 cm
Size of the pieces: approx. 3 x 4 cm
Hardness 10 = steel pin with diamond splinter
Additional identification tools: magnet, file, splitting knife.
With streak plate and instructions.
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