The NIST Traceable Digital Thermometer 07 405 is a rugged, low cost, lollipop-type, wide range digital thermometer to replace hazardous mercury units. It employs micro-electronics for reliability and utilsies a liquild crystal display for accurate reading. It features an easy to read heads up display. The reading updates every second, and at the touch of a button, the memory recalls highest and lowest readings. The 20cm long stainless steel stem is impervious to acids, bases, and solvents. The thermometer includes a NIST traceable calibration certificate.