St. Elizabeth’s Hospital of Boston, approximately 1980. The E for M DR-8 was used with a Collins Plethysmograph and for research. Photograph provided by Richard Johnston.
Category Archives: 1980s
Tissot Spirometer, 1989
Tissot Spirometer to validate High ventilation in Exercise Testing. Photo generously provided by Felip Burgos, MSC, RPFT, RN. Barcelona, Spain.