Wynne "Infallible" exposure meter
1913
1913
1927
1895-1940
1934
circa 1910
1895-1900
1897
1897
1893
1893
1897
1910
1890-1910
1914
1893
1911-1921
1910
1921
1914
1914
1911-1921
1914
1914
1911-1921
1890-1910
1900
2004
1887
2001
1865