Harris IRT (Industrial Resistance Testers) Enterprises, Inc. Was separated from our parent company, Harris Instrument Corp. in 2001. Before that time we operated as part of Harris Instrument Corp. We began business in 1978 as a supplier of precision digital resistance testers for industry. In that time we introduced digital limit sensors, temperature compensation, serial interface for use with computers and many other concepts that are now taken for granted in this industry.We enjoy a challenge and welcome requests to solve special resistance measurement problems. We have developed a wide selection of Kelvin Test probes and special circuits for automated testing applications.