Test Products International, designs and manufactures high quality hand-held test and measurement equipment. A wide ranging product line; which includes gas detection, IAQ, DMM’s and Clamp-on’s makes TPI unique. With an industry leading no-hassle three year warranty, on most products, you can always feel confident you are receiving the right tool at the right price. Our dedicated team of professionals can help walk you through even the most difficult application. Visit our newly designed website at www.testproductsintl.com for additional information on all of our quality products, and test the TPI advantage! Test Products International, 9615 SW Allen Blvd., Beaverton, OR, USA, 97005. 800-368-5719