
Machine-Screw thread making tool, by Henry Maudslay
circa 1800
circa 1800
1775-1799 (original); 1900-1907 (model)
1794
1798
1797
1800
1795
circa 1800
2000-100 BCE
1791
1800
1790
1796
1800
1794
1800
1800
1792
1795
1800
1790
1795
1795
1790
1792
1792
1790
1799
1796-1797
1796-1798
1790
1990-96
1794
1772 (original); 1919 (model)
1792
1791-1792
circa 1795
mid-1800s
1705-1737
1791
1797
4000-2001 BCE
1800
1791
1790-1794
1799
1795
1800
1797
1799