
Ferguson solar chronometer and astronomical compass
1912
1912
1875-1901
1908-1912
1875-1885
1875-1900
1831-1920
circa 1885
1875-1900
1910-1912
1851-1875
1910-1912
1904-1911
1895-1930
1890
1905-1915
1879
1820-1890
1886
1886
1910-1920
1896
1890-1910