A professional who services mechanical, electronic, and optical equipment controlling naval guns, following blueprints and diagrams and using handtools and testing devices. Responsibilities include:

• Inspects and cleans optical equipment, installing new eyepieces as necessary.
• Adjusts and lubricates gyroscope.
• Repairs and replaces parts of motors and remote control equipment, communications equipment, and electronic equipment, using handtools and standard test equipment.
• Participates in bore-sighting and aligning guns.
• Tests wiring circuits, following blueprints and diagrams.