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ID number:  BIRRC-P0256
Institution:  Research and Cultural Collections
Named collection:  Historic Physics Collection
Artist / Maker:  Bouron
Title / Object name:  Electrically Maintained Vibrating Reed
Object type:  Electrical instrument
Date made:  1914
Materials:  Brass and steel on polished wooden base, with wooden cover with glass top
Measurements:  30 x 17 x 10 cm

This is a device for making and breaking an electrical circuit at a specific frequency. The steel reed is maintained in vibration by an electromagnet driven via a contact on the reed; the action is that of a buzzer. When the reed vibrates it makes contacts at the extremities of its motion in each direction. These are nicely made contactors with small springs so that they do not have too large an effect on the motion.
The instrument was presumably used in telegraphy.

Inscriptions / Translations:  Stamped on underside of base: G P O 66, and also on side of base: 30

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