Vintage West German Barometer for on the Wall, Made of Wood, Brass and Glass, Lo

This is a charming and very interesting vintage barometer made in West Germany. It is made of dark wood, brass and glass. There is a hole on the back for hanging on the wall. All parts have patina and mild scratching. Please have a look at the pictures to appreciate the charming character of this piece. I don’t know if it is in working condition. I think it is beautiful for decorative purposes. 5” wide 1 3/4” deep 6.25” tall with loop