- Aircraft/aerospace flight instruments and guidance systems (9)
- Acceleration indicators and systems components, aerospace (3)
- Aircraft flight instruments (1)
- Automatic pilots, aircraft (3)
- Navigational systems and instruments (2)
- Binnacles (compass housings) (1)
- Radar systems and equipment (3)
- Sonar systems and equipment (7)
- Sextants (2)
- Defense systems and equipment (5)
- Missile guidance systems and equipment (1)
- Search and detection systems and instruments (2)
- Air traffic control systems and equipment, electronic (1)
- Detection apparatus: electronic/magnetic field, light/heat (5)
- Light or heat emission operating apparatus (1)
- Radio magnetic instrumentation (1)
