Meteorological Office aneroid barometer Mark I
1940
1940
1940
1950
1884
1870-1890
1831-1870
1876
1895-1905
1914
1848
1914
1923
1850
1871-1906
1850
1875
1997
1963
1912
1997
1986
1871-1900
1900-1920
1915-1925
1945-1954
1895-1905
1875
circa 1900
circa 1880
circa 1910
1943-1983
1925-1983
1964
1885-1993
1875
circa 1910
1900-1924
1871-1900
1850-1900
1984
1913-1916
1944