Clockwork timer for operating an external lever (to control gas or electricity supply)
1939-1949
1939-1949
1904-1910
1980-1984
1940-1980
1940-1974
1940-1974
1997-1999
1930-1960
1970-1984
1968
1960-1975
1968
1925-1930
2020-2021
1968
patented 1908
circa 1904
1970-1979
1920-1930
1950-1969
1899
1920-1930
1903-1913