TELEPHONE No. 250
The Telephone No. 250 is a portable linesman's telephone of the local battery variety. It has an integral battery, ringing generator and a dial. The telephone can be used on automatic lines.
The Telephone No. 250A has a socket that accepts a headset using a Plug No. 420. This socket is located on the left hand back corner.
The generator handle is stowed by means of the brass clip inside the lid.
The mouthpiece has a flattened spittoon.
Introduced in the late 1930's.
Telephone includes (1946 and 1956):-
Supersedes Telephone, Nos. 44 and 44B
Circuit diagram - N350.
Drawings - 63567 (250) and 92182/92163 (250A).
The battery used in the phone is the Battery Dry No. 11, which is 3 volt battery consisting of 2 cells. Click here for more information
Telephone No. 250
Telephone No. 250A
Last revised: December 15, 2021