BELL No. 53A

Magneto bell used indoor and outdoor.

Fitted with twin 6 inch gongs (Bell-Gongs No. 15), the Bell coil resistance is 1000 Ohms.

Superseded by Bell No. 67A

Adjustment of Magneto bells

GPO Engineering Instructions on Fire Systems

A modified version of this bell is used in the Telephone No. 25. The bell mechanism and gongs are mounted internally.

Superseded by Bell No. 67.

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Last revised: March 27, 2020