Test Gauge® & Backflow Supply was formally known as Test Gauge Industries. The company was purchased in 2000 and moved from Mt. Prospect, IL to Elgin, IL. In 2003 the decision was made to take a calibration company into a full master parts distrubutor, which then led to Test Gauge® being one of the nation's fastest growing supplier of parts.

At Test Gauge® we pride our selves on customer service. We not only listen to our customers but when our customer asks for a product we do not say we cant get it, we find a way to get it.

Our superior customer service is unmatched in the industry, from our calibration services all the way to installation of devices, you can always count on us.