Find your comfort zone! Light, strong and durable, this brass comfortmeter monitors both temperature and humidity either indoors or outdoors. It is designed to indicate optimum comfort conditions when both hands cross in a limited area of the dial known as the "comfort" zone. The thermometer, displayed on the left side of the dial, displays the temperature in both Fahrenheit and Celsius while the hygrometer on the right shows shows the percentage of relative humidity.Dimensions: Dial 3 1/5"; Base 4 3/4"; Depth 2 1/8"Materials: Maintenance-free brass finish with ultra-hard protective coatingGuaranteed not to tarnish or scratchWeather resistantBeveled crystal glassTraditional porthole front-opening bezelMounting methods for boat or shoreLifetime warranty on finish and movement