| Country of Origin | United States |
|---|
Check the listing for details. Vintage Leeds & Northrup Co. Portable Millivolt Indicator Model 8657C. Condition: Used, Made in United States. Listed at 77.00 USD. Leeds & Northrup portable millivolt indicator potentiometer with galvanometer Model 8657C in wood box. There is a No. 6 dry battery manufactured by Eppley Labs still housed inside of the case. Item came from Missouri School of Mines and Metallurgy and it looks like they got a lot of good use out of it.
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