Weston AC & DC Portable Electronometer Ammeter Model 370 Vintage 1943 Made USA for Sale

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Weston AC & DC Portable Electronometer Ammeter Model 370 Vintage 1943 Made USA For Sale

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Weston AC & DC Portable Electronometer Ammeter Model 370 Vintage 1943 Made USA:
$90.00

WESTON AC & DC PORTABLE ELECTRODYNOMOMETER AMMETER

MODEL 370

MADE IN USA- NEW JERSEY CIRCA 1943
THIS METER WAS IN STORAGE AND NOT USE ABOUT IT\'S OPERATING CONDITION

THIS WOULD MAKE A UNIQUE ADDITION TO ANY ELECTRONIC COLLECTION

THE WOOD CASE DOES HAVE SCRATCHES FROM STORAGE & AGE

THIS IS A SOILD WOOD BOX

LEATHER HANDLE IS MISSING

INSTRUCTION SHEET IS INSIDE FRONT COVER

Weston Model 370 No. 6909, wood box laboratory grade instrument.
Measures absolute amps.
Magnetically shielded electro-dynamometer ammeter.
Scale: 0 - 5 or 0 - 10 amps AC or DC.
Mirrored scale (for accurate readings)
Dimensions: 8-1/2\" Wide x 10-1/2\" High x 5-3/4\" Deep
Weight: 12.2 lb
Made in USA circa 1953.
Specifications:
Rated accuracy: 0.25% of full scale value over approximately the upper 80 % of the linear length

of the scale and 0.17% (0.009 inch) of full scale length over the remaining lower portion of the scale.
External Temperature Influence: Less than 0.2% of full scale value for ambient temperatures

from 15 to 35 C (59 to 95 F)
Frequency Influence: Negligible up to 1,000 Hz. Less than 0.5% of full scale value from 1,000 to 2,500 Hz.
Sustained Operation Influence: Maximum effect less than 0.2% of full scale value over a period of 6 hours.
External Field Influence: Maximum effect less than 0.15% of full scale value in a field of 5 oersteds.
Resistance and Inductance:
Amperage Range: 0 to 5 Resistance 0.178 ohms / Inductance 0.072 mH
Amperage Range: 0 to 10 Resistance 0.147 ohms / Inductance 0.037 mH

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