Power Test, LLC | 2,386 followers on LinkedIn. AN INDUSTRY LEADER IN DYNAMOMETERS AND HEAVY EQUIPMENT TESTING SYSTEMS | Power Test, Inc. is an industry leader in the design, manufacture and sale of dynamometers, heavy equipment testing systems and related data acquisition and control systems. For over 40 years, Power Test has provided specialized test equipment to manufacturers, rebuild facilities and distributors in the mining, oil & gas, power generation, marine, trucking, construction, rail, and military markets in over 90 countries on six continents. Our headquarters and manufacturing operations are located in Sussex, WI with sales representatives worldwide.