REOTEMP Super Duty Compost Thermometer with Fast Response - Fahrenheit and Celsius (48 Inch Stem), Made in The USA 48" Stem Length, with 20% Faster Response Time Made in the USA Super Duty 3/8" Stem Diameter & Fast Response 1/4" Tip Durable All Stainless Steel Construction Large 3" Hermetically Sealed Dual Scale Dial: 0 to 200F & -10 to 90C