Supco M501 Megohmmeter Insulation Resistance Tester is an accurate measuring device to test the quality of insulation. The M501 comes built into a sturdy carrying case as well.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.