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Weston Master Universal photo-electric exposure meter
circa 1946
circa 1946
circa 1960
1964
1985
24 February 1951
1941
1952
1955
1949-05-06
1949-05-06
1930
circa 1919
1955-1960
1950
circa 1954
circa 1955
1950-1960
1953
1949
1949-05-06
1949-05-06
1949-05-06
1964-01-21
1912-1920
1919
circa 1971
1953
1955
1949
1921-1930
1948-05-05