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