Cadran actinique mobile

Cadran actinique mobile

Exposure Measurement

Cadran actinique mobile

1891
Cardboard and paper
Overall: 5 1/8 × 3 9/16 in. (13 × 9 cm)
Gift of Eastman Kodak Company, ex-collection Gabriel Cromer
DescriptionActinometric wheel.
Inscriptions Printed in black ink, outside edge: [months of the year in French]
Printed in black ink, inner wheel, C: [times of the day]

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