
Pendulum, from time recorder
1905
1905
1905
1906
1370-1350 BCE; 1931
2000-1350
2000-1350
20-500
20-400
1904
1908
1908
1908
1903
1903
1905
1905
1907
1940-1050
1908
1906
1903
2000-1000
3500-1000
3000-2000 BCE
1902
1906
circa 1905
1906-1908
1908-1900
1902
1902
1908
30-300
2000-1350
2050-1750 BCE
10,000-2,000 BCE
1950-1900
1905-1908
1905
1905
1906
1952-3
1952-3
1905
1905
1905
4000-30 BCE
10000-5000 BCE
1977; 1204-1206
10000-500 BCE