TitleIBM SSEC Vacuum tube panel unit
DescriptionB&W image of a vacuum tube panel unit side view. Shows 9 tubes with their labels at each end of panel are connector with labels. Also a set of indicator lights are on raised extenders.
Verso: "Berenice Abbott Photograph 50 Commerce Street New York 14, N.Y." balck stamp also :" Top Figure 4a" in pencil.
Dimensionsoverall: 8 in x 10 in
|102698444||IBM SSEC Arithmetical unit|