An instrument used to measure net radiation is described. A number of these instruments, because of their size and inexpensiveness, can be used within an experiment when connected to a single recorder by a switching mechanism.
1 Journal Paper No. J-3536 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 1359. This work partially supported by U. S. Weather Bureau Contract 9295.
2 Research Associate in Agricultural Climatology, Iowa State College, Ames, Iowa and Director of the Institute of Physics and Meteorology, University of Wageningen, Netherlands, guest professor at Iowa State College 1957–1958.
