Heating Rod K
Microphone Box (115 V, 50/60 Hz)
Microphone Box (230 V, 50/60 Hz)
Microphone probe, long
Microphone probe, short
Microsecond counter (115 V, 50/60 Hz)
Microsecond Counter (230 V, 50/60 Hz)
Pulse Box K
Experiment: Speed of sound in air (230 V, 50/60 Hz)