UEi 550B Digital Pocket Thermometer features a protective boot which includes a built-in magnet. Featuring all the ranges needed for current HVAC applications including an easy display reading with a water resistant, ergonomic head and a hard sleeve case which doubles as a useful pocket clip. The loop which is built into the metal clip can also be used to slip the stem through in order to offer additional support or to insulate from the heat of the substance being measured.