The Blichmann ThruMometer In-line Thermometer is a great way to know the temperature of your wort while it's being transferred. Very helpful when using a counterflow or plate chiller to read the temperature of your wort going into the fermenter. Made of heat-treated highly corrosion resistant aluminum. Reads from 58°F - 88°F, and has 1/2" in and out posts.
Note- Clean with mild detergent only, using warm (no hotter than 140°F) water. Do not soak in the same bucket as other metals, as this could result in galvanic corrosion to the aluminum. After use, dry thoroughly and store in the protective plastic tube.