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Antique weston voltmeter model 45
ANTIQUE WESTON VOLTMETER MODEL 45. NUMBER 11262. MADE BY THE WESTON ELECTRICAL CO. OF NEWARK, NEW JERSEY. IT MAY OR MAY NOT WORK. APPEARS TO BE IN GOOD CONDITION. OAK CASE IS SEPARATING A BIT ON THE BOTTOM. Usage/History: Instruments such as this were used by trained technical/scientific staff for precision laboratory measurements of voltage, and as secondary standards for calibrating other meters. The mirrored scale makes it easier to read the instrument to a given accuracy by enabling the operator to avoid parallax errors. Note that this particular instrument has been standardized at the factory and was certified accurate to 0.5% of full scale, or in this case 0.075
