- Aircraft/aerospace flight instruments and guidance systems (221)
- Acceleration indicators and systems components, aerospace (131)
- Aircraft flight instruments (58)
- Airspeed instrumentation (aeronautical instruments) (11)
- Altimeters, standard and sensitive (4)
- Artificial horizon instrumentation (3)
- Bank and turn indicators and components (5)
- Electronic detection systems (aeronautical) (22)
- Flight recorders (5)
- Glide slope indicators (1)
- Gyro gimbals (2)
- Gyroscopes (9)
- Heads-up display systems (HUD), aeronautical (3)
- Horizon flight indicators (2)
- Inertial guidance systems (15)
- Infrared object detection equipment (52)
- Instrument landing systems (ILS), airborne or ground (5)
- Omnibearing indicators (6)
- Position indicators for aircraft equipment (1)
- Rate-of-climb instrumentation (7)
- Aircraft control instruments (42)
- Aircraft control systems, electronic (77)
- Automatic pilots, aircraft (25)
- Navigational systems and instruments (169)
- Antennas, radar or communications (44)
- Binnacles (compass housings) (1)
- Compasses and accessories (29)
- Control receivers (5)
- Degaussing equipment (3)
- Radar systems and equipment (165)
- Sonar systems and equipment (181)
- Space vehicle guidance systems and equipment (23)
- Nautical instruments (32)
- Fathometers (2)
- Hydrophones (3)
- Sextants (16)
- Defense systems and equipment (235)
- Missile guidance systems and equipment (14)
- Warfare counter-measure equipment (20)
- Search and detection systems and instruments (88)
- Air traffic control systems and equipment, electronic (29)
- Detection apparatus: electronic/magnetic field, light/heat (132)
- Electronic field detection apparatus (aeronautical) (7)
- Magnetic field detection apparatus (20)
- Cabin environment indicators (4)
- Distance measuring equipment (8)
- Light or heat emission operating apparatus (8)
- Pictorial deviation indicators (2)
- Radio magnetic instrumentation (6)
