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1938 - wheels and bearings gold-plated then inspected

GOLD PLATED WHEELS & BEARINGS

CD 1966045 E&MP30.001

Electric Meters

May 18. 1938

To prevent corrosion in the delicate gears of the registering apparatus, the wheels and bearings of Westinghouse meters are gold-plated.

But each shaft assembly must be tested for concentricity and trueness of gear. 


Original Caption by Science Service
Westinghouse



National Museum of American History

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