Johnson Exposure Calculator, envelope containing the calculator, film speeds conversion table and how to guide. 1525824 | National Trust Collections

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You searched , Maker: “William Lennox Lascelles Fitzgerald-de-Ros, 22nd Lord de Ros of Helmsley (1797-1874)”

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Johnson Exposure Calculator, envelope containing the calculator, film speeds conversion table and how to guide.

Johnsons and Hendon

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Category

Photographic technology

Date

Unknown

Materials

Measurements

77 x 77 x 0.1 mm

Place of origin

London

Collection

Fox Talbot Museum, Wiltshire

NT 1525824

Summary

Johnson Exposure Calculator, envelope containing the calculator, film speeds conversion table and how to guide.

Makers and roles

Johnsons and Hendon, manufacturer

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Place of origin

London (115463)

Category

Photographic technology (4282)

Collection

Fox Talbot Museum, Wiltshire (29836)

Maker

Johnsons and Hendon (7)

Linked items

See all items in this set (4)