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