CONDENSER MICROPHONE FOR LAPEL (LAVALIER) Measurement set consisting of: TM1 Microphone, WSTM1 Windproof Foam, TM1 Suspension Clip, 1/2 Caliper Adapter, CD with calibration data. The CD data is a numerical representation of the frequency response of the microphone that, together with the supplied sensitivity, can be used in an infinite number of measurement systems to correct the response of the microphone.