Shell.
The thin film of copper that forms the face of an electrotype, and which is afterwards backed np with lead to the required thickness.
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Entry taken from Printers' Vocabulary, by Charles Thomas Jacobi, 1888.
The thin film of copper that forms the face of an electrotype, and which is afterwards backed np with lead to the required thickness.
· ·
Entry taken from Printers' Vocabulary, by Charles Thomas Jacobi, 1888.