Watt's end measuring machine
1776
1776
1778
2000-100 BCE
1778
1990-96
1771
1775
1705-1737
1772 (original); 1919 (model)
4000-2001 BCE
1775
1772-1773
1776
1773
1774
1730; 1967
1972-3
2500 BCE
1880-120
1990-95
1772
1776
1775
1066; 1876
1888-185
1945-50
1772
1777
circa 1775
1772-1775
3000-1500
3000-2000 BCE
2000 BCE
1772
1775
1775
1778
1776
1776
1777
1771
1771
1775
1776-1777
1775
1775
1778
1771
1772
1778