
Gold barometer correction slide Mk IVA, 1914
1914
1914
1963
1855
1850
1850-1860
circa 1700
1964-1974
1952-3
1860
1820-1850
1914
Late 19th Century
1851-1860
1954
1801-1900
1970
1643
1860-1870
circa 1785
1957
1892
1975
1963
1800
1870-1874
1857
1786
1921
1878
1845-1855
1760-1772
1900-1980
1801-1850