Large 9-3/4" diameter, easy to read from a distance

Wall-mount temperature and humidity thermometer has bright markings that are permanently fused to an all-black background for great visibility. Glass face and molded frame are durable for indoor use. Dual F/C scale, range from -40° Fahrenheit to 120° Fahrenheit (-40° Celsius to 50° Celsius), accuracy +/- 2° Fahrenheit. RH accuracy +/- 2%, range 0-100%.