Acoustic Impedance Meter, c 1970-1980.
2 9 c m
40cm
actual image size: 32cm x 21cm

Acoustic Impedance Meter, c 1970-1980.

© Science Museum / Science & Society Picture Library

Description

Acoustic Impedance Meter, type ZA20, used by Dr Michele Clements in her studies of hearing in the unborn child.
 

Image Ref.

10460805
 

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