You searched , Maker: “John William Graham (1859-1932)

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Sixtus

P. Gossen and Co.

Category

Technological items

Date

1930 - 1939

Materials

Place of origin

Germany

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Collection

Fox Talbot Museum, Wiltshire

NT 102020

Summary

Selenium-cell photoelectric meter

Makers and roles

P. Gossen and Co.

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