industrial electronic repair services; namely, repair of D.C. drives, A.C. drives, A.C. and D.C. servo drives, vector drives, electronic testing equipment, timers, counters, encoders, temperature controllers, pressure controllers, temperature indicators, pressure indicators, single point process controllers, process controllers, photoelectric controls, meters, flow controllers, level controllers, valve positioners, field regulators, turbine controls, programmable logic controllers, machine tool controls, numerical controls, robotic controls, video monitors, signal conditioners, barcode scanners, barcode printers, printers, power supplies, UPS systems, softstart controls, electronic brakes, solid state starters, voltage regulators, alpha numeric displays, ASR controllers, status monitors, eddy current drives, programmers, distributed controls, welder controls, generator controls, motion controllers, recorders, motion detectors, stepper controls and calibrators