Colossus narrow tape pulley

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  • Details
  • Description
Date Introduced
1945
Photographer
Richards, Mark
Dimensions
8 1/2 x 8 1/2 x 1 in.
Manufacturer
Post Office Research Station, Bletchley Park
Credit Line
Gift of Toby Harper
Copyright Owner
© Mark Richards
Object ID
X49.82
Speed
5,000 characters/s
Memory Width
5-bit

This is one of few surviving pieces of the Colossus machines used at Britain’s Bletchley Park to break German Lorenz codes during WWII. Winston Churchill acknowledged that they shortened the war, but ordered the machines destroyed and kept secret.