Du Nouy Tensiometer made by Cambridge Instrument Co. Ltd
Aerotensiometer
1950-1955
Du Nouy Oil-damped Tensiometer by Cambridge Instrument Co. Ltd.
Tensiometer, G. Boulitte, c.1925
Tensiometer S.M.E. MK V Serial No.52
1942
Tensiometer, osseiometer, c.1925
Tensiometer S.M.E.MK IV Serial no.56
1942