Artifact Details

Title

Vacuum tube type SR1407

Catalog Number

102735025

Type

Physical object

Date

1925 ca.

Identifying Numbers

Model number SR1407 Printed in silver on top of the glass envelope.
Other number 10-3 13-2 Handwritten vertically in silver ink on the glass envelope.
Other number XAD4846 Stamped in green ink near the bottom of the glass envelope.

Dimensions

overall: 2 7/8 in x 1 1/8 in x 1 1/8 in

Description

This is a Sylvania developmental power pentode in a glass envelope with an eight-pin loctal base. This is a spare tube for Bus Driver Arithmetic Rack S/N 4.

Category

Component/vacuum tube

Credit

Gift of the Digital Equipment Corporation

Lot Number

X115.82