The endurance II 135 comfortmeter measures 5"(Dial) x 7"(Base) x 2 1/2"(Depth) and weighs 2 lbs. Light, strong and durable, the Endurance II Comfortmeter in brass finish monitors both temperature and humidity either indoors or outdoors. This instrument is designed to indicate perfect comfort conditions when both hands cross in a limited area of the dial, the COMFORT Zone. The thermometer, displayed on the left side of the dial, displays the temperature in both Fahrenheit and Celsius. The hygrometer shows percentage of relative humidity on the right. It comes with a maintenance free, ultra-hard protective coating. It's guaranteed not to tarnish or scratch. It's weather resistant and has a traditional porthole front opening bezel. Beveled glass crystal. Mounting methods for boat or shore. Lifetime warranty on finish and movement.