A professional who tends semiautomatic machine that daubs and sprays lacquer to base and mouth of cartridge cases to form waterproof seals around primer and bullet. Responsibilities include:

• Pulls lever to start machine and inserts cartridge cases into recesses in dial feedplate.
• Observes mechanisms that index, apply and remove excess lacquer, and eject cases.
• Notifies primer-waterproofing-machine adjuster of machine malfunction.
• Examines cases to ensure complete coverage of lacquered areas.
• May tend machine that inserts primer in case.