Opportunity to obtain an unused laboratory grade voltmeter for AC. Scale is 1 - 150 volts Made in the USA by Modutec. Shows # 30182-057B on the dial Barrel is 2" in diameter and 2 deep Face is 2-1/4 in height and 3 in width.
I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
Measures current range of AC 0-10A with accuracy of Class 2.5, qucikly and accuratedly for testing. Clear and easy to read scale and a button for fine tuning the dial, can be directly connected with the equpment being tested without the power source. Note: please choose the right meter to testing differe
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