AQUA-ONE MINI THERMOMETER GLASS (FLOAT OR SUCTION CAP)

Float or suction cap. Clear and easy to read scale that tells you, unmistakably what the temperature is in both Celsius and Fahrenheit degrees. It floats and is secured by a included suction cup. Easy to install, just place it in the tank and attach the suction cup to the inside of the tank for easy and accurate reading. Test range: 0 ~ 50 degrees celcius.