Glass Hardness Plates
470148-652
- Descripción:Glass Hardness Plates, 3x2x1/4"
- Referencia:470148-652
- Nº de proveedor:B19172/1
These plates help you determine the hardness of unknown minerals in the field.
- Plates Determine How Hard Minerals Are
- System Uses Mohs' Scale
- Ideal for Unknown Minerals in the Field
- Custom-Swiped Edges Reduce Risk of Injury
- Simple-to-Use
Scratch your mineral across the plate determine how hard it is. If the mineral scratches the plates, it’s harder than five on the Mohs’ hardness scale.
The custom-swiped edges reduce risk of accidental injury when handling.