Artifact Details Title Vacuum tube type 7AK7 Catalog Number 102732330 Type Physical object Description The record contains an octal vacuum tube type 7AK7 with eight connector pins. There is some yellow printing on the side of the glass, which is difficult to read. Date 1938 ca. Manufacturer Sylvania Place Manufactured U.S. Identifying Numbers Model number 7AK7 Printed at the top of the tube in silver Other number H8P Printed at the top of the tube in gray Dimensions overall: 3 in x 1 in x 1 in Category Component/vacuum tube Credit Gift of the Digital Equipment Corporation Lot Number X115.82 Related Records 102631002 Whirlwind bus driver module