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some marquis and ovals)
can be screwed to a bench or fitted into a vice
This is subject to inspection and approval in the USA
revolve the top filter until everything in the tube appears dark and place the stone on the platform in the middle
HARDNESS PENCILS X8 (MOE 2 TO 9) + PLATES X3 Magnification_10X some marquis and ovals)Summary Set of ten hardness testers. 8 hardness picks ("pencils") from No. 2 to No. 9. 1 Glass plate (hardness 5. 5) 1 Brass plate (hardness 3. 5) Also 1 streak plate (to test a mineral's streak colour) 1 magnet 1 polishing stone to keep the tips sharp Each 'pencil' has a tip of a different hardness from No. 5 to No. 9 on the Moe scale of hardness (see 'Further Information'). Is it easy to use? Yes. See which will scratch your sample and which will