TitleElectro Technical Mark IV
PublisherElectro Technical Laboratory
Place of PublicationJapan
|Other number||#1187||Verso pencil|
Dimensionsoverall: 4 1/2 in x 6 in
DescriptionBlack and white image of two Mark IV plug in modules with covers removed to show components. A papertape segment is in front to show scale.
On verso " Plug- in of the Mark IV" in ink.