Bellset used by the BPO on Direct Exchange Lines with Telephone No's 156LB, 196LB or 246 in LB exchange areas.  Also used on CBS Exchanges No's 1, 2 & 3.

Came complete with twin bell gongs, 1000 ohm ringer, Capacitor and a Coil Induction No. 21.

A Bakelite cover was provided.

Diagram N531.

Adjustment of Magneto bells

Click here for the difference between a Bell and a Bellset

Internal view of the Bellset
Capacitor to the left and Induction Coil to the right

ATM Bellset No. 31 diagram


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Last revised: December 01, 2018