Thermco’s BI-METAL Dial Thermometers feature quality construction and design with easy to read black scale on a white background. The accuracy of these thermometers is +/- 1% over the entire scale. All stainless steel case, stem, and bezel for superior shock protection, even in extreme conditions. The lens is made from unbreakable polycarbonate. An external nut provides for easy recalibration. Immersion is approximately 2" (50mm). Supplied with a convenient plastic stem case which has a pocket clip. This case can also be used as a handle for the thermometer.