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Nassau Frequency Calibrator Demonstrator – Model 4060N Auto Loop – With Instruction Booklet The unit measures approximately 7 1/2" wide, 4 1/2" tall, and 2 1/2" deep. Serial No: 06946928N Vintage Nassau Instrument Co. Model 4060N Auto Loop Calibrator. Designed to measure D.C. voltage and current. Includes the instruction booklet. This unit is untested and is being sold as-is, with only the items shown in the photos included. Ideal for electronics hobbyists, calibrators, or collectors of vintage test instruments.
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