SWITCHBOARD No's N503 - N506

Magneto Wall Switchboards

N 506
shown pictured to the right.

n506.jpg (10641 bytes)These switchboards are extremely simple, reliable and give maximum efficiency. They are known as the "Pyramid" type on account of the design formed by the arrangement of the keys.

The woodwork is matt polished and the metal parts of the apparatus are nickel-plated.

The drop type indicators serve for both calling and clearing purposes.

All connections are made by means of keys. The bottom row connect the extensions to the operating telephone, and the remaining rows connect the extensions, indicated on the key top, together. Engaged lines are recognized by the engraved numerals on the key tops being slightly turned to the left. The illustration shows extensions 3 and 6 connected together, and  extension 4 connected to the operating instrument.

A night bell and switch are provided, but a separate magneto telephone instrument is required for operating purposes.

Code No.   No. of Lines   Dimensions   Weight lb.
N503   3   13 x 7.5 x 7.5   9.25
N504   4   13 x 7.5 x 7.5   10.25
N505   5   15.5 x 9.75 x 7.5   14.25
N506   6   15.5 x 9.75 x 7.5   15.5

Taken from the Ericsson catalogue, edition 26

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Last revised: October 12, 2019