
Wynne "Infallible" exposure meter
1913
1913
1879
1895-1905
1894
1885
1890
1901
1925-1935
1954
1880
circa 1910
1930
1887
1953
1880
1891
1892
1912
1890
1904
1890
1894
1938
1937
1900
circa 1895
1885
1930
circa 1914; 1985
circa 1914
1800-1950
1800-1950
1800-1950
1800-1950
1800-1950
1800-1950
1800-1950
1800-1950