Bishop Harman photometer

Bishop Harman photometer, wood and metal, with candles

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Bishop Harman photometer, wood and metal, with candles
Science Museum Group
© The Board of Trustees of the Science Museum

Bishop Harman photometer, wood and metal, with candles, personal relic of N. Bishop Harman, with cover, by F. Davidson, 29 Great Portland Street, London, England, 1880-1920.