Brewing Thermometer - 2 in. x 12 in. Made in USANot all bi metal thermometers are created equally, so if youre looking for one that you dont have to constantly tap to get an accurate reading, this is the thermometer to choose. Other bi metal thermometers have a helical coil in the stem that is tack welded to the stem itself causing hang ups to occur, and you have to tap the thermometer to get an accurate reading. Our new line of thermometers feature a super sensitive bimetallic helical coil