Zoo Med Creatures Thermometer: A compact adhesive thermometer for monitoring the temperature inside your pet’s habitat. It sticks directly to the terrarium wall (horizontally or vertically) and features easy-to-read scales in both Fahrenheit and Celsius. Designed especially for insect and arachnid enclosures, this thermometer lets you ensure your tarantula’s or reptile’s home stays in the safe, comfortable temperature range. Keeping track of habitat temperature is simple and accurate with this handy stick-on gauge.