The German-made barameter is only for decoration--it is nonfunctional. The long glass tube on the left which measures the temperature had broken at the top and leaked the mercury. The tube on the right, which would measure the barometric pressure, is missing.
As you can see from the photos, however, it is too nice to dispost of and, in fact, may accentuate your other home furnishings.
The item is about 80 years old.