The inhaler invented and patented by Oskar Macholdt in the 1920’s in Germany. Since then it has been very popular with doctors and their patients.
medical device made of medical glass
designed for the purpose of the inhalation of essential oils and oils from medicinal plants
inhalation through nose or by mouth

in very good condition for its age, original, complete, almost unused
in original cardboard box – see photos
box measurements: 20 x 7 x 3 cm (7.9“ by 2.75“ by 1.2“)

weight: 70 g