1¢ Spirometer Found on an AuctionGuy.com listing.  Described as: Lung Tester Shocker Arcade Machine. Countertop amusement machine in wood cabinet includes two front handles, a hose on the side for air pressure testing., and two coin slots. Dial is marked The Medina Manufacturing Co. Medina, N.Y. Includes key. Circa 1911. Condition (Excellent). Size 12-1/2″ x 11-1/2″ x 21-1/4″.