ZOO MED ANALOG REPTILE THERMOMETER Extreme temperature range from 20° to 120° F (-6° to 49°C) for precise temperature monitoring. This is a Zoo Med Precision Analog Thermometer Gauge for reptiles. It allows precise monitoring of the temperature of your terrarium. It is made with precision German movement. The velcro backing enables removal of the gauge for proper terrarium cleaning. Thermometer Gauge Analog style reading Thermometer scale: 20° to 120°F (-6° to 49°C)