The Megger CB101 calibrated check box checks the calibration of a Megger BM15, MJ15, or other 5kv insulation tester (sold separately). The check box has four resistors (10 megaohms, 100 megaohms, 1 gigaohm, and 10 gigaohms) to test the calibration of a wide range of resistance values. The CB101 is used to check the calibration of a Megger BM15, MJ15, or other 5kv insulation resistance tester to verify the accuracy of the results.
Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) 9001:2008 standards.