Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
1760-1770
1755
1762
1758-1769
1758-1769
1758-1769
1762
1762
1769
1761
1757
1762
1762
1762
1762
1762
1755
1764
1762
1762
1770
2000-100 BCE
1761
1755
1770
1990-96
1758-1769
1758-1769
1761
1705-1737
1762
1761
1763
1761-1762
1755-1765
1761
1762
1765
1762
1761
1761
1769
1760
1761
1761
4000-2001 BCE
1755
1763
1755-1765
1761