Since 1967, Electronic Specialties, Inc. has designed and manufactured handheld electrical testing and diagnostic tools for automotive, small-engine, HVAC and industrial technicians. Based in Genoa City, Wisconsin, the company is particularly known for its Relay Buddy testers, including patented tools that put automotive relays under load to expose intermittent faults. Its products have received multiple industry awards, including Motor magazine’s Top 20 Tools honors.
Innovative Products of America, IncSince 1996, Innovative Products of America has been a Woodstock, New York OEM developing professional maintenance tools for the automotive and industrial aftermarket. Founder Peter Vinci, an electromechanical engineer since 1979, has guided the company’s product innovation from a 75,000-square-foot facility with in-house engineering and manufacturing. IPA is particularly known for its made-in-USA MUTT trailer testers, which let technicians diagnose trailer systems without connecting a tow vehicle.WOODSTOCK, NY
Practical Instrument Electronics, IncFrom its upstate New York operation, Practical Instrument Electronics makes compact handheld process calibrators for industrial technicians. Designing calibrators since the 1980s and operating under the PIE name since 2001, the company builds, assembles, and calibrates its instruments in the United States. Its patented loop-diagnostic technology helps technicians spot current leakage and other hidden process-loop problems, while the company also repairs and recalibrates PIE units, including discontinued models.WEBSTER, NY
Yellow JacketFor more than 75 years, Yellow Jacket—Ritchie Engineering’s Bloomington, Minnesota brand—has made HVAC/R and automotive A/C service tools and equipment, including the hoses and gauges that established its reputation. The company combines U.S.-designed and manufactured products with technician-focused innovations such as its wireless YJACK instruments and TITANMAX digital manifold, while providing training and support to contractors worldwide.HILLTOWN, PA
EDTM, IncEDTM, Inc. is a Toledo manufacturer known for more than 30 years of expertise in handheld testing technology for the window industry. Its American-made instruments help glass and window professionals verify materials and performance in the field or on the production floor, with NIST-traceable calibration supporting reliable measurements.TOLEDO, OH