Mineral Hardness Set

Mineral Hardness Set
Untuk menguji kekerasan mineral di bawah skala kekerasan Mohs
Main Specification :
* 8 points durable metals/alloys of Mohs hardness 2 thru 9
* Streak Plate; test Streak color
* Hardness Plates -3.5 and 5.5 and Glass Plate
* Magnet – detect magneticc rock
* 4 double ended picks
* Grindstone, keep points sharp
* Instruction
* Case