- Aircraft/aerospace flight instruments and guidance systems (4)
- Acceleration indicators and systems components, aerospace (2)
- Aircraft flight instruments (1)
- Airspeed instrumentation (aeronautical instruments) (2)
- Bank and turn indicators and components (1)
- Infrared object detection equipment (1)
- Rate-of-climb instrumentation (1)
- Aircraft control instruments (3)
- Aircraft control systems, electronic (4)
- Navigational systems and instruments (3)
- Antennas, radar or communications (1)
- Radar systems and equipment (3)
- Sonar systems and equipment (3)
- Space vehicle guidance systems and equipment (2)
- Sextants (1)
- Defense systems and equipment (8)
- Search and detection systems and instruments (5)
- Detection apparatus: electronic/magnetic field, light/heat (3)
- Electronic field detection apparatus (aeronautical) (1)
- Magnetic field detection apparatus (3)
- Cabin environment indicators (1)
- Distance measuring equipment (1)
