Aspects 193 Cardinal/Dogwood Window Thermometer, 8-Inch This mercury-free thermometer tube uses a high-visibility red to register the temperature on both the Fahrenheit and celsius scale Mount the thermometer to any window or glass surface using the two suction cups Vibrant designs on clear acrylic Thermometer is hand silk screened with as many as 16 colors Measures 8-inch length by 3-1/2-inch width