EXTECH, CAT II 600V/CAT III 300V, 0.2 mA to 30 A, Clamp On Earth Resistance Tester - 1YB44|382357 - Grainger
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UNI-T UT275 Clamp Earth Ground Tester LCD Clamp Meter 0.001Ω Resolution Auto Calibration Resistance 0.01~1000Ω Leakage Current 0.00-30.0A Jaw Capacity 28mm: Amazon.com: Tools & Home Improvement
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Megger DET24C - Digital Clamp-On Ground Resistance Meter with Data Storage and Downloading | TEquipment
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