ST ProPlus thermometers have circular laser sighting to identify measurement area and optical resolution to measure smaller areas. All models offer better than 1% accuracy, backlit display, low battery indicator, automatic off and 7 sec display hold. Models ST60 and ST80 from Raytek Corp. have adjustable emissivity; maximum, minimum, differential and average temperature readings; last-reading recall; and high and low temperature visible/audible alarm.

June 2001, RS# 238