Artifact Details Title Whirlwind vacuum tube module Catalog Number 102729486 Type Physical object Description There are two vacuum tubes in a module with a black handle. "Control Pulse Output" on gray front panel. There is also a small black tack screwed to the front that has "POSITIVE OUTPUT" engraved in white. Date 1951 Manufacturer University of California, Berkeley Place Manufactured Boston, MA, U.S. Identifying Numbers Serial number 56 Stamped in white ink on front of module Dimensions overall: 2 in x 6 1/4 in x 10 1/4 in Category Component/vacuum tube Credit Gift of Bill Wolf Lot Number X1256.96