Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
1760-1770
1755
1762
1752
1752
1758-1769
1758-1769
1758-1769
1762
1762
1769
1761
1757
1762
1762
1762
1752
1762
1762
1755
1764
1762
1762
1770
2000-100 BCE
1761
1758-1773
1755
1770
1990-96
1771
before 1753
1752
1752
1752
1751
1752
1752
1752
1760-1772
1775
1758-1769
1758-1769
1761
1705-1737
1762
1761
1763
1761-1762
1755-1765