This handheld digital thermometer is designed to provide precise temperature readings in compost and soil applications. A waterproof case has an easy-to-read 3.5 digit display and a 500 hour battery life, and useful functions include a Hi/Low button, a HOLD button, and a switch between Celsius and Farenheit. These thermometers are accurate to 0.3 percent full scale and uses a stainless steel REOTEMP Fast Response Digital Probe. Units have a 3/8-inch stem diameter with a 1/4-inch tip diameter for fast response and a 36-inch stem length. The pointed tip makes for easy pile insertion, and a type K thermocouple sensor plugs into any of this company’s digital thermometer models.