Found on Getty Images UK.  Captioned as “JUN 10 1965; Abe Polonsky, physical education director at the Jewish Community Center, takes a lung capacity test in the plethysmograph, or ‘body box.’ This gadget, in which subject sits, measures total volume of air in the lungs.”  Photo credited to Ed Maker.  This is the volume-displacement plethysmograph designed by Jere Mead and J H Emerson.