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History of Science Museum

Osram Radio Valve Type CM8, by Osram Company, English, 20th Century

Inventory Number 79293


Acknowledgement: © History of Science Museum, University of Oxford, inv.79293

Item type
Object
Makers
Osram
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
"G.E.C. LTD / TYPE C.M.8. / OSRAM / PHOTO CELL / MADE IN ENGLAND / 9662" printed on exterior surface of bulb.
Object type
Radio valve
Dimensions
Diameter: 35mm Height: 120mm Weight: 0.05kg
Inventory No
79293
Accession Number
2004-9/349

Description

Osram Photo Cell Radio Valve Type CM8, in vertical glass envelope, with polished black bakelite? base. With four steel base pins and single steel top cap.