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Image
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2
Non-Commercial Use
2
Category
Psychology, Psychiatry & Anthropometry
1
Television
1
Collection
BBC Heritage Collection
1
Maker
Amplifex Radio Corporation
1
Ralph Gerbrands Co.
1
Object type
aerial
1
recorder
1
Place
Arlington
2
Arlington, Middlesex county, Massachusetts, United States
2
Material
electronic components
1
fibre (unidentified)
1
metal (unknown)
1
wood (unidentified)
1
Date
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Amplifex Frame Aerial
circa 1924
Cumulative recorder writing device by Ralph Gerbrands Co.
1950-1970
