Wave & Frequency Relevance Price: Low - High Price: High - Low Alphabetically: A - Z Alphabetically: Z - A 200kHz Pulse Generator £30.00 AC Magnetic Field Coil £33.75 LED Array £85.00 Loudspeaker £24.30 Loudspeaker Amplifier £48.74 Loudspeaker Unit £44.18 Microphone £38.14 Ripple Tank £408.11 Signal Generator £133.31 Signal Generator & Amplifier £264.60 Velocity of Sound Kit £63.00 Velocity of Sound Switches £63.00 Vibration Generator+Accessories £77.59 Vibration generator Resonance Strips and Spring £16.66 Xenon Stroboscope £209.93