CONSTRUCTION: This instant-read meat temperature thermometer features a 1.75-inch dial that is magnified by the convex plastic lens to enhance the viewing UNIQUE FEATURE: The storage sleeve features a custom calibration wrench and provides protective storage when not in use TEMPERATURE RANGE: 0 to 220 degrees Fahrenheit, -10 to 100 degrees Celcius NSF CREDIBILITY: Product listed with the National Sanitation Foundation to meet higher quality standards for material, safety, design, construction, and trusted product performance IMPORTANT: The thermometers will be hot after use. Use potholders or oven mitts when handling a hot thermometer.