
Early Sikes' hydrometer 6 1/2" long
1802
1802
1814
1813
1800
1825-1835
1820
1812
circa 1820
1370-1350 BCE; 1931
1800-1825
1800
1820-1840
1796-1797
1800-1810
1790-1797
1810
2000-1350
2000-1350
2000-1350
1833
1816-1837
1816-1837
20-500
2000-1350
1850-1350
1844
1827
20-400
1843
1823
1800-1820
1829
1828
1830
1800-1805
1790-1819
1790-1819
1790-1819
1807
1807
1808
1824
1824
1824
1824
1824
1823
1810
1798
1796