decade bridge, 193
Dateearly 20th Century
Inventory NumberRS0253
ClassificationBridge
Subject
Maker
General Radio Company
1915-present
Cultural Region
Place of Origin
Dimensions13 x 15 x 42 cm (5 1/8 x 5 7/8 x 16 9/16 in.)
Material
DescriptionA General Radio type 193, serial number 311, decade bridge, mounted in a polished walnut cabinet, with bakelite front/knobs and brass fixtures.
Signedfront: DECADE STD / BRIDGE / TYPE 193 SERIAL NO. 311 / GENERAL RADIO CO. / CAMRBIDGE, MASS.
FunctionPossible function: This bridge has three resistance arms, two of which consist
of four dial decades, with a range of 0.1 to 1111 ohms. The Aryton-Perry Method of winding produces units the resistances of which are nearly independent
of frequency.
Mounted in a polished walnut cabinet, fitted with a copper shield to protect against outside electrostatic fields.
http://ieeexplore.ieee.org/iel5/10933/34875/01666788.pdf
(Source -- General Radio advertisement for Type 193 decade bridge)
of four dial decades, with a range of 0.1 to 1111 ohms. The Aryton-Perry Method of winding produces units the resistances of which are nearly independent
of frequency.
Mounted in a polished walnut cabinet, fitted with a copper shield to protect against outside electrostatic fields.
http://ieeexplore.ieee.org/iel5/10933/34875/01666788.pdf
(Source -- General Radio advertisement for Type 193 decade bridge)
![precision wavemeter, General Radio model No. 224, Serial No. 113 [?]](/internal/media/dispatcher/44354/postagestamp)
General Radio Company
Date: early 20th Century
Object number: RS0243b
