Exposure time calculating wheels

Exposure time calculating wheels

Exposure Measurement

Unidentified

Maker

Exposure time calculating wheels

1900
Cardboard and paper
Paper (envelope): 3 7/16 × 4 15/16 in. (8.7 × 12.5 cm)
Diameter (each wheel): 2 3/4 in. (7 cm)
Gift of Eastman Kodak Company, ex-collection Gabriel Cromer
DescriptionTwo exposure time calculating wheels in envelope.
Inscriptions Printed in black ink, envelope recto, BC: EXPOSITION UNIVERSELLE 1900 \ MÉDAILLE D'OR

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