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Artifact Details

Title

Vacuum display tube type GI-21

Catalog Number

102732431

Type

Physical object

Description

This object is a forerunner of the Nixie tube. The digits are read from the top of the glass envelope. The phenolic base contains 11 pins and a key way; it is similar to an octal base. It is packaged in its original carton.

Manufacturer

National Union

Place Manufactured

U. S.

Dimensions

overall: 3 1/8 in x 1 3/8 in x 1 3/8 in