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History of Science Museum

Photograph (Cyanotype) of a Round Frequency Indicator, by Elliott Brothers, May 1, 1915

Inventory Number 11975


Item type
Object
Provenance
Presented by the Marconi Corporation in 2003. Part of the Elliott Archive.
Primary inscriptions
Intrinsic negative number: 'N.971.'. Annotated with various dimensions and other details. Date on back: '1/5/15'.
Physical material
Paper
Object type
Photograph
Dimensions
Height: 156mm Width: 110mm
Inventory No
11975
Accession Number
2003-11

Description

Cyanotype from a glass negative of an Elliott frequency indicator, round version. Vertical format. Annotated on front.