Tested. Trusted. TESCO.

TESCO was started by a utility veteran more than a century ago and we continue to build on that foundation today. The first patent for a Meter Test Switch was through The Eastern Specialty Company. After providing what was considered an industry standard for nearly 75 years, TESCO sold off that product line just prior to the turn of the century. In 2004 we proudly re-introduced the test switch line, which serves as the foundation of many TESCO products. In order to provide the best resources moving forward, we continually look through old product literature and speak with TESCO instrument users at utilities all over the world to assess the needs of the industry. We have been able to reintroduce many TESCO products that have been updated for today’s technology and metering needs. The TESCO tradition of innovation, experience, and expertise in the electric utility industry is alive and well. We hope you will join us as we move forward together into our second century of service.