For over 100 years, Megger has been the premier provider of electric test equipment and measuring instruments for electrical power applications. Best known for a world famous range of insulation testers, Megger provides a full service solution to meet your electrical test and measurement needs. Megger products provide testing solutions in the most critical maintenance areas including cable fault locating, protective relay testing, and power quality testing. Megger's product offering spans 30 distinct product groups with over 1,000 specific products. Circuit breaker test sets, watthour meter test equipment and protective relay test instruments were formerly manufactured under the Multi-Amp brand. High quality instruments used for testing and maintaining transformers, batteries and underground cables, were formerly manufactured under the Biddle brand. Manufacturing insulation testers from 1kV to 10kV is where Megger started, and the Megger brand name is so well known today that maintenance professionals often incorrectly use it as a verb when they refer to doing an insulation test on wiring. This famous brand name dates back to 1889, when the first portable insulation tester was introduced with the MEGGER brand name on it. The firm enjoys an outstanding reputation in the areas of ground testing, oil testing and a wide variety of electrical contractor maintenance tools such as multimeters, portable appliance testers, and clamp-on meters. The most recent addition to Megger's line up is an innovative range of instruments for testing telecommunications and data integrity. Working with both copper and optical technologies, and collaborating closely with the major industry players, the firm has developed easy to use products to keep the costs of test and measurement down and productivity up. Megger products are manufactured at sites in Dallas, Texas; Valley Forge, Pennsylvania and Dover, England. All Megger products meet the highest standards for quality, reliability and safety. Their facilities are certified to full operational requirements of the ISO 9001 quality standard, with the Dover site also certified to ISO14001, the international environmental standard.