Transducer for uterine contractions, experimental model, c.1956 Transducer for uterine contractions 1955-1958
Three physiological pressure transducers by Druck Ltd, serial numbers S/N 661, 668, 681, 1979 Three physiological pressure transducers by Druck Ltd
Pressure transducer for cardiac catheterisation, type 01183, cased, by Cambridge Medical Instruments Ltd., c.1979 Pressure transducer for cardiac catheterisation 1975-1979