Conant Custom Brass Hummingbird Comfortmeter Bronze Patina 4" Dial Face with Large numerals makes it Easy to Read at a Glance Swivel Arm Mounting Bracket with matching hardware is Adjustable for Just the right Angle. Anodized Aluminum & Glass Construction gives it a Durable, attractive finish and the crystal won't yellow or craze Separate Hygrometer and Thermometer Dials, Precision Japanese Coils for Reliable, Accurate Temperature Readings. Measures both Fahrenheit and Celsius.