Measures temperature and humidity. Polished brass case. Beautiful decor. Flange mounting. Color coded (F and C). Certified for accuracy. For wall mounting. Temperature range: 10 to 170 F (-8 to 75 C). Humidity range: 0 to 100 percent RH. Dimensions: 5.25 in. dial diameter, 5.875 in. with flange. Weight: 11 oz.