If you forget your exposure meter use a sundial

If you forget your exposure meter use a sundial

Image: 9 1/4 x 7 1/16 in. (23.5 x 18 cm)
Paper: 10 x 8 in. (25.4 x 20.3 cm)
Credit Line
Bequest of Wilma Wilcox, 1993
Accession No. 22477.1993