STC TELEPHONE No. 4087-B

No. 4087-B - SELECTOR SET

Forms part of the telephone equipment at Way Stations.

Is used with the 4001 type Selector Set.

Dimensions - 8in. x 7in. x 3in. (22 x 19 x 9 cm.)


Taken from:-
STC Catalogue for Railway Systems Apparatus, D/DT. 17D1, Edition 1 (1957)

Last revised: September 28, 2022