Found on the cover of the ENVIS NEWSLETTER Volume 20 Number 3, 2013 Special Issue on Occupational Lung Disease. The photo was undated but is probably from around 1980.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 581.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 578.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 578.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 579.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 579.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 579.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 580.
From Medical Electronic Laboratory Equipment 1967-68: Pergamon Electronics Data Series by G. W. A. Dummer, J. Mackenzie Robertson, published by Elsevier, page 580.
The diverse, quirky and mostly forgotten history of Pulmonary Function testing