testing systems comprising dynamometers, road simulators track test fifth wheels, velocity lock control panels, road record instrumentation, manual transmission shifters, performance monitor instrumentation for road test fifth wheels and fuel measuring transducers, gear boxes, test stands for torpedoes, test stands for turbine engine drive shafts, rack and pinion steering gear test stands, alternator durability test stands, combination pump and motor test stands, universal hydraulic fatigue bench, valve body and governor test stands, final drive test stands, dual station flow benches, final drive shaft seal test stands, chain pre-stress machines, starter motor endurance test stands, front support test stands, diesel injector flow test stands, hydrostatic pump and motor test stands, casting leak test stands, test carts for vehicle diagnostic, hydrostatic steering and gear test stands, clutch and brake test stands, continuity and insulation leakage test stands, custom design test stands with controls for fatigue, functional, performance and production testing, and hydraulic, pneumatic and leak test stands designed specifically to test a device