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.

The generator handle is stowed by means of the brass clip inside the lid.  The mouthpiece has a flattened spittoon.

The case was made of soft plastic, normally found in a red/brown colour, but some telephones were of a harder plastic and were a mottled brown colour.

Telephone includes (1946 and 1956):-
1 x Buzzer No. 26A.
1 x Coil, Induction, No. 21.
1 x Condenser, M.C., No. 97.
1 x Cord, Inst., No. 5/09E, 3".
1 x Dial, Automatic, S.S., No. 10LA (1946) or No 12LA (1956).
1 x Generator, No. 26A.
1 x Handle, Generator, No. 21.
1 x Telephone, No. 184B, Black, with Cord 3/63KB, 33".

To be requisitioned separately:-
1 x Battery, Dry, No. 11.

Supersedes Telephone, Nos. 44 and 44B

Circuit diagram - N350.

The battery used in the phone is a Battery Dry No. 11.  The voltage is 3 volts.  This is effectively two dry cells in a cardboard container.

The battery container size is 74mm high x 65mm wide by 33mm deep.

Battery Dry No. 11




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Last revised: November 27, 2020