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]
Printed in black ink, inner wheel, C: [times of the day]
