You live in a world where important decisions about your loved ones are subject to the accuracy of a single device. A variety of infrared thermometers and thermal imaging cameras are used in doctors’ offices, and require continual upkeep when their warranties expire. These devices are calibrated once at the factory, and in some cases, never again. This can be an alarming situation when the measurements of these devices influence a doctor’s decision. We provide a low-cost product that will prevent a child’s fever from going untreated by reducing error in thermal imaging devices. TD-75 allows customers to learn the bias of readings on an infrared device and confidently make decisions using the temperature reading plus the bias correction.