Martindale Electric, founded in 1928, also owns the Edgcumbe Instruments Metrohm® products, as well as the John Drummond Engineers range of test lamps. We are a British owned company, based in Watford, just 5 minutes......Martindale Electric, founded in 1928, also owns the Edgcumbe Instruments Metrohm® products, as well as the John Drummond Engineers range of test lamps. We are a British owned company, based in Watford, just 5 minutes from junction 5 of the M1. Our product range helps electricians and maintenance engineers carry out portable appliance testing, check fixed wiring for 17th Edition and Part P testing, safely prove dead, and measure everything from light and sound levels to microwave leakage and power consumption. Martindale Electric has always been a pioneer in test equipment. Our firsts include: The first ever socket tester. The first safety insulation tester. The first self proving non-contact voltage indicator. The first low cost fuse finder. The first non-trip, no battery, no test button, loop tester displaying PE, PN PFC & PSC The first handheld insulation tester with polarisation index. The first advanced socket tester, as defined by the Health and Safety Executive. The smallest and lightest handheld PAT Tester. Due to a policy of continuous development, Martindale Electric Company Limited reserves the right to alter the equipment specification, description and prices outlined in this publication without prior notice and no part of this publication shall be deemed to be part of any contract for the equipment unless specifically referred to as an inclusion within such contract. E. & O. E. © Martindale Electric Co. Ltd 2012