AMRAD type D short wave variometer face plate
Date1920
Inventory NumberRS0749
ClassificationVariometer
Subject
Maker
American Radio and Research Corporation
1915 - 1928
User
Cruft Laboratory, Harvard University
founded 1914
Cultural Region
Place of Origin
Place of Use
Dimensions13 x 13 x 5 cm, 1 lb. (5 1/8 x 5 1/8 x 1 15/16 in., 0.5 kg)
Material
DescriptionFace plate of a AMRAD type D short wave variometer, made of hard rubber. No label. Scratched "8000 Ω."
In Collection(s)
Signedunsigned
Inscribedon lower face plate: 8000 Ω
ProvenanceCruft Laboratory, Harvard University.
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