Our world revolves around you, the customer. Since 1916, our goal has been total customer satisfaction through world-class manufacturing, service and support. Tel-Tru Manufacturing Company’s world-class philosophy encompasses state-of-the-art equipment and manufacturing processes and a customer-centric staff and culture. From our beginnings, making household thermometers, up to our latest products serving the industrial, commercial, OEM, HVAC, and food service markets, we have always put the customer first. We look forward to providing you with a world-class experience!