Artifact Details

Title

Colossus - Valves

Catalog Number

102627466

Type

Still image

Publisher

The Science Museum, London

Place of Publication

London

Identifying Numbers

Other number #698 Verso pencil
Other number 1818/75 Verso pencil

Dimensions

overall: 9 1/4 in x 7 1/2 in

Description

Black and white image 5 vacuum tubes (valves) and a socket with a ruller in the middle to show scale. Identification dataprinted on the image:
"THE VALVES USED IN COLOSSUS 1. The photograph below shows the four valves and the photo-electric cell which were most commonly used throughout Colossus. They are ( left to right) EF 36 - GTIC - 807 -L63 - Photo-cell 'RCA' 2. In the foreground is the surface mounting ocatal valveholder used extensively throughout the machine. " Verso : Copyright Enquiries to The Science Museum"

Category

Photograph

Lot Number

X7413.2015