Vintage chalkware wall thermometer Miller Studios Inc. dated 1966

This is a decorative plaque made of chalkware (a type of plaster) with a thermometer embedded in the design. The thermometer is designed to be hung on a wall and typically measures temperature in Fahrenheit, ranging from 30°F to 120°F. (But does not) Please look at all pictures. The thermometer does not work. It stays at 50° all the time.