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The unit is not tested, unsure of its mechanical condition, physical condition appears to be fair with some noticeable flaws, see photos, manufacturer is Wheelco Instruments Division, Barber Coleman Company, Rockford Illinois,
Vintage Rubicon Company / Honeywell Portable Precision Potentiometer, Not Tested
$20.00
Portable Potentiometer Volt & Millivolt Calibration Wooden Case 2732 (VR2)
$65.00
Vintage Antique Wheelco Instruments Portable Potentiometer Model 320 7436 & Key
$88.98
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