Crucible
A melting pot capable of enduring great heat, without injury and used for melting metals. It is made of clay or clay compounded with black lead and other materials.
How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.
A melting pot capable of enduring great heat, without injury and used for melting metals. It is made of clay or clay compounded with black lead and other materials.