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1 file, 13 items

Marconi Instruments papers

1 photograph

Photograph: Marconi ink recorder

1 photograph

Photograph: Marconi double pen recorder

1 photograph

Photograph: Marconi ticker tape recorder

1 blueprint

Blueprint: Electrode Selector Wiring

1 photograph

Photograph: Marconi high speed recorder

1 letter

Letter from C. Horne to William Grey Walter, 10 September 1942

1 letter

Letter from C. Horne to F.L. Golla, 20 June 1941

1 blueprint

Blueprint: E.E.G. circuit, power unit and two channel amplifier

1 letter + 3 pages

Letter from C. Horne to F.L. Golla, 12 June 1941

1 carbon page

Brief specification of apparatus MME 7

1 letter

Letter from C. Horne to F.L. Golla, 30 June 1941