Profile: Tesco offers products & instruments for the electric distribution and metering industry. Our products include phase sequence indicator, CT field test set, meter test switch, artificial loads & burdens, meter cleaning system, service ground test set, transformer polarity checker, industrial flashlights and accessories. We offer services such as meter shop layout & planning, automated meter testing systems, technology reviews, field services and statistical sampling plans. Our current transformer field test set is a multi-range ammeter with a built-in ohmic burden which is normally shunted, but which can be put in series with the meter by pressing a push button.