ENDURANCE CHROME 125 COMFORTMETER The Chrome Endurance Comfortmeter displays both temperature and humidity on a generous size dial showing conditions that are ideally "comfortable." The hygrometer shows % of relative humidity on the right scale and the thermometer displays temperature in both Fahrenheit and Celsius on the left. This hygrometer thermometer is weatherproof and designed for outdoor use. It is part of the Endurance Collection which is an extensive line of nautical instruments that feature several remarkable benefits. All instruments in the Endurance Collection have a maintenance-free, ultra-hard finish guaranteed to NEVER tarnish. The patented Slide-n-Lock Mounting System eliminates the need for visible mounting screws and is easily removed for necessary adjustments. •Beveled glass crystal •O-ring seated behind glass for weatherproof construction •Lifetime warranty on finish and movement •United States Patent #7,293,456