Stanley 08004 DLX Thermometer  - Yellow For measuring water temperature in pool or spa Includes removable buoyant cap for floating option or Polyethylene cord for hanging option Easy-to-read Farenheight and Celsius display Shatter-resistant lens and alcohol-based indicator Reads maximum high temperature of 120 degrees F, and 50 degrees C 9-1/2" x 2-1/4"