Model railway turntable
1850
1850
1845
1849
1845
1842
1850
1834
1834
1848
1833
1842
1837
1845
1837
1840
1841
1837
1851
1830-1850
1835
1837
1829
2000-100 BCE
1893-4
circa 1840
1837
1849
1840-1850
1835
1846
1829-1851
1838
1835-1845
1934
1850
1846
1841
1863-7
1834-1844
1837
1838
1831
1839
1845-1851
1840-1845
1840-1851
1844
1844
1840
circa 1832