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Amazon.com: General Tools PT2020G-220 Analog Soil and Composting Dial Thermometer, Long Stem 20 Inch Probe, 0 to 220 degrees Fahrenheit (-18 to 104 degrees Celsius) Range : Patio, Lawn & Garden
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Tel-Tru 34100604 Model Gt300R Resettable Bi-Metal Process Grade Thermometer, Stainless Steel, 3" Dial, 1/2" Npt Back Connection, 0.250" Diameter x 6" Long 304Ss Stem, 0/220 Degrees Fahrenheit and -10/100 Degrees Celsius, +/-