Wet and dry bulb psychrometer for humidity measurement
1960-1970
1960-1970
1860
1926-1932
1959
1950-1953
1940
1895-1905
2010
2022
About 1890
2022
2010
2016
2022
1890
2023
1960-1970
860-825 BCE
before 1889
2021
1901-1911
1925
1800-1872
2010
1990-1991
2022
2013
2014
1925
2014
before 1889
2010
About 1970
1997
before 1889
1993
1995
About 2009
1957
2021
1923
1998
2022
1986
1997
1993
1980s
1998
1923
1893