
Electrotype replica of a 16th-century mariner’s astrolabe
1580-1588; 1930
1580-1588; 1930
1736-1738
1739
1739
1740
1740
1736
1736
1676; 1840-1865
1736
1740
3000 BCE
1566; 1876
1931; 750-850 CE
1960-1979
1735
1738
100-1 BCE; 1501-1600; 1914
670 CE; 1920-1935
350-250 BCE; 1945-1955
1942; 1501-1600
1740
1791-3
500-400 BCE; 1901-1930
1600-1500 BCE (original); 1900-1914 (copy)
3000-2000 BCE
1860-1920; 500-401 BCE
1740
1737
2000-1001 BCE
2050-1750 BCE
800-200 BCE; 1969
1740
2000-100 BCE
2000-1001 BCE
3000-1000
2000-1001 BCE
10000-5001 BCE
2000-100 BCE
1750-1730
1648-1724
1871-130
1930-70
1910-1921
8500-2000 BCE
8500-2000 BCE
8500-2000 BCE
8500-2000 BCE
8500-2000 BCE
8500-2000 BCE