TitleIBM SSEC Arithmetical unit
Dimensionsoverall: 8 in x 10 in
DescriptionB&W image of the IBM SSEC Arithmetical unit. It shows rows of vacuum tubes.on Verso: Paper label " Section of the electronic arithmetical unit of the IMB SELECTIVE ELECTRONIC CALCULATOR showing typical arrangement of the vacuum tubes. (January, 1948)"
Also "7g Top fys" in pencil