- 10. Timers
- 15. Position and Velocity Detectors
- 17. Sources of Sound
- 25. Sound Detectors
- 20. Circuits/Components/Inst.
- 30. Function Generators
- 35. Amplifiers
- 37. Oscilloscopes
- 40. Advanced Instruments
- 50. Power Supplies
- 60. Light Sources
- 62. Lasers
- 65. Microwave Apparatus
- 90. Computer Interface