BELL No. 69A & No. 69B
No. 69A is a Flameproof
magneto bell and terminal unit used with Telephone No. 266.
Bell No. 69B supersedes Bell No. 69A and is a Flameproof magneto bell and terminal unit used with Telephone No. 702.
This Bell provides the terminating unit for the telephone, but may also be used as an extension bell.
Fitted two 500 ohm bell coils.
The bell has a single 4 in gong; its range of audibility is limited and is not equivalent to that of a Bell No. 59A. Overall dimensions of the bell are 6¼in x 6¼in x 4in; the weight is 7 lb.
Case is silicon-aluminium with a ¾" conduit outlet and two spare plugged outlets.
Cover is fixed by means of a special triangular key.
Made by Ericsson their model No. N3131.
Last revised: March 04, 2021