Since 1982, in-vivo measurement probes have been manufactured in the same way: that is by using a medical grade silicone tube with an internal diameter of 0.5mm and an external diameter of 1mm.
To this tube, we merge a handle of the appropriate size to connect with the measurement microphones according to the manufacturer of the measurement device.
Since the material and dimensions are the same, the acoustic properties of the probe are also identical.
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