Wave & Frequency Relevance Price: Low - High Price: High - Low Alphabetically: A - Z Alphabetically: Z - A 200kHz Pulse Generator £30.00 IPCIrwin AC Magnetic Field Coil £39.83 LED Array £85.00 Loudspeaker £26.11 Loudspeaker Amplifier £52.39 Loudspeaker Unit £55.30 Microphone £45.00 Ripple Tank £481.54 Signal Generator £143.31 Signal Generator & Amplifier £284.45 Velocity of Sound Kit £63.00 Velocity of Sound Switches £63.00 Vibration generator Resonance Strips and Spring £19.66 Vibration Generator+Accessories £91.56 Xenon Stroboscope £247.69