Waterproof Digital Thermometer is recommended as a food safety tool in commerical & industrial applications.  Features a switchable Celsius/Fahrenheit scale, reduced tip probe for fast response time, extra large readable digits, hold button to display reading for several seconds, and pocket clip for portability. Fahrenheit range is -40° through 311°.  Celsius range is -40° through 155°.  Thermometer is approximately 3.9” long.  NSF certified.