TPI offers the latest technology at the most affordable price to technicians, contractors, engineers and others seeking value based test and measurement instruments. Headquartered in the heart of the “Silicon Forest” in Beaverton, Oregon, TPI combines innovation, performance, customers service and high-value in products which include: Vibration, Combustion, Pressure (manometers), Temperature, Combustible Gas, Digital Multimeters, Clamp Meters, IAQ, specialty test and measurement instruments, and a wide range of accessories.