A professional who sets up and operates machine to cast lines of type. Responsibilities include:

• Sets up matrices in assembly stick by hand, according to copy for which slugs are to be made.
• Locks assembly stick containing matrices in groove on top of machine.
• Starts machine and monitors operation while metal slugs bearing printed characters corresponding to characters on matrices are automatically produced.
• Removes assembly stick after slugs are made and distributes matrices and slugs in compartments of cases used for storing them until use.
• May be known by trade name of machine used.