
Snowdon rain gauge, by Negretti and Zambra
1908
1908
1951-1900
1909
1910
1910
1801-1892 (prepared); 1926 (element replaced)
1801-1892 (prepared); 1926 (element replaced)
3000-1500
1969-07
circa 1910
circa 1910
circa 1910
circa 1910
1909-1910
1908
1909
2000-1350
2050-1750 BCE
1910
1950-1900
1910
1909
1972-3
2500 BCE
2000-1000
1909
1910
1908
1970-1910
1910
1908
1971-1900
1915-1825
1910
1910
1909
1909-1910
1909-1910
1909-1910
1909-1910
1801-1825
1908 0f 1885 invention
1713-1750
1800-1830
1908
1801-1850
1800-1830
1692-1730
1910
1909