Found on the Skinner Auction website.  Described as:

“Mahogany Cased Metabulator by Sanborn Company, Cambridge, Massachusetts, circa 1950, recording compartment with paper roll, barometer and thermometer dial, carbon dioxide absorption chamber and oxygen tank, metal plaque stating Made for George Danis, MD by Sanborn Company, Cambridge, Mass., USA, all in a mahogany cabinet with draw on wheels and instruction manual, ht. 41 in. “