sound recording gate for early process

Made:
1915-1925

sound recording gate for early process. Two brass blocks, hinged, milled to accept 35mm film. One has inserted optical slit, 1mm long leaving 1.5cm for picture width. The other is velvet covered with inserted velvet tipped screw pressure pad. C.1920

Details

Category:
Cinematography
Object Number:
1990-5036/3241
Materials:
brass, velvet
type:
sound recorder
credit:
The Kodak Collection at the National Media Museum, Bradford

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