Maw's Double-Valved Earthenware Inhaler with MouthpieceMaw's Double Valved Earthenware Inhaler with Mouthpiece Inhalers were used to treat chest illnesses and diseases by inhalation. The inhaler has a valved mouthpiece where a sponge soaked in the treatment would be placed. It was first manufactured around 1866. The inhaler was made by S Maw & Son, a medical and surgical supplier. Check photos for measurements, details and condition. Vintage and antique pieces are more likely to have imperfections, please