Watt's end measuring machine
1776
1776
2000-100 BCE
1778
1778
1990-96
1771
1705-1737
1772 (original); 1919 (model)
1775
1776
4000-2001 BCE
1775
1772-1773
1776
1777
1776-1777
1778
1773
1779
1773
1776
1774
1775
1777
1777
1777
1774
1773
30 CE
1778
1774
30 CE
1772
1774
1771
2686-2613 BCE
1888-185
1945-50
1370-1350 BCE; 1931
1931; 250 BCE
1370-1350 BCE; 1931
2000-1000
100 BCE-300 CE; 1890-1920
1772
1972-3
2500 BCE
1880-120
1990-95
circa 3000 BCE
2000 BCE