Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
1760-1770
1762
1762
1769
1761
1762
1762
1762
1762
1762
1762
1762
1770
1761
2000-100 BCE
1762
1764
1770
1990-96
1771
1761
1705-1737
1762
1761
1763
1761-1762
1761
1762
1765
1762
1761
1772 (original); 1919 (model)
1761
1769
1760
1761
1761
4000-2001 BCE
1760-1772
1763
1761
1761
1761
1761
1760
1763
30 CE
1762
1762
30 CE