REOTEMP Backyard Compost Thermometer - 20" Stem, with Composting Instructions (0-200 Fahrenheit) Accurate & Durable: REOTEMP has been Manufacturing Accurate and Durable Compost Equipment for 20+ Years! Thick 1/4" Diameter Stem for Higher Durability Hermetically Sealed: Won't Fog Up. Can be Left in the Compost Pile Over Night Composting Instructions: Included to Get You Started Read at a Glance Dial: Fahrenheit with 3 Temperature Zones that Indicate Compost Activity - Steady, Active and Hot When to Turn Your Pile When to Add More Material When to Water When Your Compost is Done <span class="a-text-bold">A Thick 1/4&#034; Diameter Stem</span>: Thicker than the Competition and Has Less of a Chance of Bending <span class="a-text-bold">Hermetically Sealed Dial</span>: Won&#039;t Fog Up and Can be Left in the Compost Pile Over Night <span class="a-text-bold">Reinforced Construction</span>: Works to Prevent the Dial from Separating from the Stem <span class="a-text-bold">Quality Bimetal Coils</span>: Benefit from Our Expertise, REOTEMP has Been Manufacturing Thermometers Since 1965