Weston Master III exposure meter
1959
1959
1935
1927
1913
1930-1940
1895-1905
1890-1900
1970-1979
1953
1888-1895
circa 1954
1908
circa 1960
circa 1910
1908
1955
1950-1959
1887
1928
1912
1972
1900
1938
1890
1895
1895-1915
1926
1889
1933
1936
1900
circa 1910
1910
1952
1945
1885