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Fluke 1503 Digital Insulation Resistance Meter Megger 2000 MΩ Backlight CAT IV 95969288668 | eBay
FLUKE 1503 INSULATION RESISTANCE TESTER CAT IV 600V Megger Meter | eBay
Fluke - 1507CAL 1507 Digital Megohmmeter, 50/100/250/500/1,000V Test Voltages, with a NIST-Traceable Calibration Certificate with Data: Amazon.com: Tools & Home Improvement