This is a vintage hygrometer that measures humidity in the atmosphere. Also has dials for the temperature along with the humidity. Made in France.
These were purchased from Wisconsin Clock Co. in Hortonville, Wisconsin when they decided to close their business. They were a clock parts distributor and manufacturer of grandfather clocks and expanded into many different types of clocks and markets as well.
Measures 3 3/4" in diameter by 1 1/4" thick. The back is 3/4" thick.
Features: Adjustable for Optimal Performance Brass Look Finish
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