Model of Solar Maximum Mission satellite spacecraft, scale 1:6. Original made in the United States, 1980. Model of Solar Maximum mission satellite, United States, c. 1980 1980 (original)
Experimental photo-electric radiation pyrometer, temperature indicator. Designed by T. C. Keeley at the Clarendon Laboratory, Oxford, England, 1920-33. Photo-Electric Radiation Pyrometer (Temperature Indicator), 1920-33 1920-1933