Artifact Details Title Whirlwind vacuum tube plug-in module Catalog Number 102729964 Type Physical object Description Item is a two vacuum tube plug in module, possibly from MIT Project Whirlwind. The tube types are identified by white screen printed markings: V1 7AK, and V2 7AD7. Also screen printed is "GT-BA". Dimensions overall: 1 1/2 in x 5 1/4 in x 9 1/2 in Category Component/module