1 Meter stick 3 Lengths of varying gauge steel piano wire, approximately 1.2 meters each, or guitar/bass strings 1 Metric hooked mass set 1 Tensioned string apparatus 1 Magnetic pickup 1 Oscilloscope ...1 Meter stick 3 Lengths of varying gauge steel piano wire, approximately 1.2 meters each, or guitar/bass strings 1 Metric hooked mass set 1 Tensioned string apparatus 1 Magnetic pickup 1 Oscilloscope 1 Microphone pre-amp