Long mahogany strip brass pin gauge with five pins
1758-1769
1758-1769
1758-1769
1760-1770
1758-1769
1769
2000-100 BCE
1757
1762
1752
1762
1755
1764
1770
1758-1773
1752
1762
1762
1755
1761
1761
1762
1762
1762
1752
1762
1762
1762
1755
1752
1770
1990-96
1760-1772
1771
1752
1758-1769
1758-1769
1705-1737
1755-1765
1765
1772 (original); 1919 (model)
4000-2001 BCE
before 1753
1752
1752
1751
1752
1752
1769
1760
1772-1773