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Martel/Beta Electrical Calibrators
Martel MS-420 Current Loop Checker
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Martel Tuff Tools T150 Frequency Calibrator is a compact instrument that can source and measure common frequency signals. Signals can range from 100 KHz or 1000 CPM.
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Martel LC-100 Current Loop Calibrator
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Martel IVC-222HPII Current and Voltage Calibrator, +/-0.015% Accuracy
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