Sound gate

Roughly hemispeherical brass casting with mounting bracket. Copper slip with optical slit mounted in top with simple brass pressure plate, sprung. Hollow to permit insertion of photocell tube or glowlamp.

Details

Category:
Cinematography
Object Number:
1990-5036/3391
Materials:
brass, copper
type:
sound recorder (component)
credit:
The Kodak Collection at the National Media Museum, Bradford

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