Accurate and effective! This PromoLab thermometer by Alla France is quick to respond and has a wide temperature range between -4 and 230F (-20 to 110C). Measuring 12.25 inches long, this is a great thermometer for taking temperature readings for your mash or hot water. These thermometers are manufactured according to the E-1 specifications of the American Society for Testing and Material (A.S.T.M.). A plastic attachment on the end allows you to suspend it with thread, stretching the range of the thermometer. Never needing calibration, this thermometer is a gread addition to your home brew gear collection!