
Calculating machine invented by Charles Stanhope in 1777, with mahogany case
1777
1777
1780
1913; circa 900 CE
1781
1780
1-79 CE; before 1914
1779
2000-1350
2000-1350
2000-1350
2000-1350
2000-1350
1370-1350 BCE; 1931
30-200
1931; 250 BCE
1772-1775
2000-1350
1775
1801-1930
20-500
1781
1370-1350 BCE; 1931
1772-1781
2000-1350
2000-1350
20-500
1940-1050
2000-1000
3500-1000
3000-2000 BCE
100 BCE-300 CE; 1890-1920
30-300
2000-1350
2050-1750 BCE
10,000-2,000 BCE
1780
1772
1780
1775
4000-30 BCE
1977; 1204-1206
10000-500 BCE
1779-1780
1972-3
2500 BCE
2000-1000
1880-120
1800- 500 BCE
1801-190
1860-1715