“For hot water infusions. The water used with this should be boiling & the inhaler not more than half full.” Inhaling through the mouthpiece caused air to enter from the spout and carry the steamy vapour to the patient. These inhalers were either small (about 14 cm to the cork) or large (about 17cm tall). The one pictured was made in England. It is a Dr Nelson type inhaler.
There is a small charge to cover this service.