Dictaphone tubes

Dictaphone tubes belonging to A.V.Hill based on the original Eddison phonograph. With black wax cylinders, moulded into hollow tubes, used for recording: some of which may contain dictation by Hill. Cylinders in cylindrical cardboard boxes.

wax, cardboard

One of three cylinders: "Thomas A Edison Incorporated, West Orange, NY"

Hill, A.V., Eddison

Physiology

LDUSC-PHYSIO-34

PHY342, 34

UCL Science and Engineering Collections