Open-circuit respiration apparatus with helmet used for BMR measurements, 1933, F.G. Benedict.
Taken from: The Development of Methods for Determining Basal Metabolism of Mankind Carpenter, Thorne M. The Ohio Journal of Science. v33 n5 (September, 1933), 297-314
Closed circuit respiration apparatus for measuring BMR, F.G. Benedict.
Taken from: The Development of Methods for Determining Basal Metabolism of Mankind, Carpenter, Thorne M., The Ohio Journal of Science. v33 n5 (September, 1933), 297-314
Closed circuit respiration apparatus for measuring BMR, 1909. F.G. Benedict.
Taken from: The Development of Methods for Determining Basal Metabolism of Mankind Carpenter, Thorne M. The Ohio Journal of Science. v33 n5 (September, 1933), 297-314
Knipping Spirometer, circa 1950’s. Found in an on-line brochure for the Museum of the Department of Physiology, Colombo Medical School. Authors Dr. A.K. Vidanapathirana, Dr. P.M. Attapattu, Ms. Nadeetha keragala.