Flukers Round Reptile Habitat Hygrometer Conveniently maintain a consistent level of humidity within your pet's enclosure with the help of the Fluker's Relative Humidity Hygrometer. Crafted to help you create a safe and comfortable environment for all amphibians and reptiles, this product is simply a must-have! It's compact design mounts to the side of your terrarium with absolute ease. Product Features: Establish and maintain a consistent level of humidity creating a safe and comfortable environment. Very simple to use and easy to operate. Helpful for getting accurate terrarium measurements.