Cate's Garden Compost Thermometer Premium Stainless Steel Bimetal Thermometer for Backyard Composting - 2 Inch Diameter Fahrenheit/Celsius Dial, 20 Inch Temperature Probe CLEAR ACCURATE DIAL  Easy to read 2 inch wide dial with color-coded temperature ranges. 40 to 180 Fahrenheit range, (4 to 82 Celsius) in 2 F increments for accurate readings. HIGH QUALITY LENS  High-quality and lightweight PC-coated lens, hermetically sealed to avoid fogging and moisture. IP55 water-resistant rating. RUGGED CONSTRUCTION  Tough, reinforced welded bolt between dial and stem for long-lasting operation and conditions. High quality 304 grade rust-resistant stainless steel. LONG QUALITY STEM  Long 20 inch, 3/16 inch diameter durable stem for accurate readings, great for larger backyard compost piles. Temperature is read from the tip, and takes about 30 seconds. 100% GUARANTEE  Buy with confidence with our no-hassle 100% money-back guarantee. Composting and temperature zone guide, including Celsius conversion, printed on back on package.