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