Artifact Details

Title

Vacuum tube type SR1407

Catalog Number

102732084

Type

Physical object

Description

This is a pentode in a glass envelope with a loctal base. This is a spare tube for Register Driver S/N 6.

Date

1925 ca.

Manufacturer

Sylvania

Place Manufactured

U. S.

Identifying Numbers

Model number SR1407 Printed in silver ink on top of the glass envelope.
Other number O 1D3 V22-2 Handwritten in green ink vertically on glass envelope.

Dimensions

overall: 3 1/8 in x 1 1/4 in x 1 1/4 in

Category

Component/vacuum tube
 

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102630997 Whirlwind register driver