Moh’s Hardness Testing Pencil 3-9
Moh’s Hardness Testing PencilsSet of hardness
testing pencils: 3-9. Mineral embedded ina brass
holder with wooden handle. Supplied in a boxedset
with notes.
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Moh’s Hardness Testing PencilsSet of hardness
testing pencils: 3-9. Mineral embedded ina brass
holder with wooden handle. Supplied in a boxedset
with notes.