The TPI 312 thermometer is small pocket thermometer, providing quick and accurate measurement. It's protective cover prolongs the tip life. -5°C to 150°C range -Water resistant for use in damp or wet environments -Quick response 3.1mm diameter stem – smallest in class Data hold for hard to reach areas Auto power off Protective cover included Air, contact, chisel and penetration tips available Don’t forget once you have purchased and received your TPI 312, leave a "Customer Review" and share your thoughts with others.