Aerotensiometer
1950-1955
Du Nouy Tensiometer made by Cambridge Instrument Co. Ltd
Tensiometer S.M.E. MK V Serial No.52
1942
Aircraft cable Tensiometer
Du Nouy Oil-damped Tensiometer by Cambridge Instrument Co. Ltd.
Tensiometer S.M.E.MK IV Serial no.56
1942