Sounder using 9 micron piezo film

Sounder using 9 micron Kureha piezo film: Film stretched over foam to bring it into tension. Mounted in plastic box which contains 9 volt battery and electronics to activate the sounder

Collection
Science Museum
Inventory Number
2992979
Title
Sounder using 9 micron piezo film
Object Type
PhysicalObject
Measurements
-

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