Search Results for: Copper alloys electroplated household articles
that you would like to test. then, with pressure, drag the point across the surface of the specimen. it will either leave a scratch, slide without scratching, or leave a trail of metal behind. the set includes eight points - for mohs hardness of , , , , , , and . the is a plastic point, the is a copper
point, the others are alloys carefully selected to match the hardness of the mohs index minerals. the set includes: four double-ended picks with hardness points of - on mohs hardness scale a grinding plate for sharpening your points streak plate glass plate for quick "hard" or "soft" determination a...
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