Heavy duty contact temperature meter for professional industrial, commercial and residential applications. The perfect tool for the professional, commercial or industrial vacuum and service technicians includes the features that are needed to get the job done in the field, on-site or in the plant. Milwaukee® 2270-20 contact temperature meter measures temperatures from 2500 to -328 °F (1372 to -200 °C) to cover a wide range of applications dual temperature measurement for faster measurement of heating and cooling systems timer function for easy tracking of minimum, maximum and average temperatures over time accurate to 0.1PERC of reading 0.7 C for correct measurements every time high contrast white on black display for easy reading in all conditions magnet strap for hanging meter in all applications. Milwaukee® Contact Temp Meter, -328 to 2500 °F, +/-1.3 Accuracy, Digital Display, 0.1 deg Resolution, AA Alkaline Battery, Plastic, Black/Red