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Untested, overall signs of wear and use with scratches and dings on the case. Comes with instructions, inside parts look to be in good condition. Last check up on 1975.
Great for collection, displaying or fixing up and using.
Missing top leather handle.
Vintage Antique Wheelco Instruments Portable Potentiometer Model 320 74 & Key
Manufactured by wheelco instruments co. Chicago Illinois usa serial 7436 model 320h