The .5inch ThruMometer™ from Blichmann Engineering™ is a great in line thermometer that allows you to adjust the wort and or water flow rates in your counterflow heat exchanger and to dial in the exact wort temperature your yeast needs without any guesswork The interior is mirror smooth, offering bacteria no place to hide.

The ThruMometer's non serrated barbs are much easier to use and clean. Never needs calibrating and is built for a lifetime of use, with heat treated corrosion resistant aluminum.