Model railway turntable
1850
1850
1845
1849
1855
1845
1842
1850
1848
1854
1842
1837
1845
1837
1840
1841
1837
1851
1955; 1830
1835
1837
2000-100 BCE
1893-4
circa 1840
1847
1837
1845-1855
1849
1840-1850
1835
1846
1853
1854
1855
1838
1835-1845
1934
1850
1848-1852
1846
1841
1863-7
1853
1837
1838
1839
1845-1851
1840-1845
1840-1851
1844
1844