William Thomson's Tide Predicting Machine, 1872
1872
1872
1762
1876-1900
1790-1819
Made late 1700s, modified 1800s
1700-1800
1760
1890-1920
circa 1935
circa 1935
1890-1920
1761
1960-1970
1901-1930
1760
1901-1950
1700-1800
1940
1940
1914-1918
1940
1801-1900
1917
1914-1918