- Reproduction
- Dictaphone tubes
- BeskrivelseDictaphone 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.
- OphavOne of three cylinders: "Thomas A Edison Incorporated, West Orange, NY"
- Materiale
- Mål
- length: 65 mm boxes
diameter: 70 mm boxes - Physio
- ObjektnummerLDUSC-PHYSIO-34
- PHY342, 34
- UCL Science and Engineering Collections
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