A professional who tends speed lathe to perform cutting-off operation on aluminum cups to be used as component parts of projectile and bomb fuses. Respnsibilities include:

• Inserts blank cup into revolving spring collet in headstock of machine, using jig.
• Removes jig, causing collet to secure cup.
• Depresses pedal to bring cutting tool in contact with revolving cup and cut it to specified length.
• Removes cup from machine.