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INSTRUMENTORS SUPPLY INC (ISI) is the Northwest's premier supplier of industrial heating supplies, measurement, and process control devices used in industrial manufacturing.  With top-tier partners like Watlow, Omron, Carlo Gavazzi, and other leading industrial solution providers, ISI has the right products for your application.  

Our online store showcases just a few of the lines and products that we represent.  If you don't see a control, timer, heater or other industrial part, just give us a call on our toll free number and we'll be happy to quote you an item, or provide you with assistance.