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> Antique chicago apparatus co. resistance box
Antique chicago apparatus co. resistance box
THIS IS A PLUG TYPE RESISTANCE BOX MANUFACTURED BY CHICAGO APPARATUS CO. CHICAGO U.S.A.
I DO NOT KNOW THE DATE OF MANUFACTURE. IT OPERATES BY REMOVING THE PLUGS TO INDICATE THE VALUES OF THE RESISTANCE YOU WANT TO SET THE BOX TO. TOTAL RESISTANCE WOULD BE 211 OHMS WITH ALL OF THE PLUGS REMOVED. UNIT DOES HAVE SOME SCRATCHES BOX ON THE PHENOLIC TOP AND ON THE WOODEN BOX. ONE OF THE PLUGS IS A BIT TALLER THAN THE OTHERS.
DIMENSIONS ARE 7 3/4 INCHES WIDE X 4 1/5 INCHES DEEP X 4 3/4 INCHES TALL. WEIGHT IS ABOUT 3 POUNDS.
