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Richard Johnston | PFT History | Page 38
Jan 16, 2016 · Haldane’s equalizing arrangement used in testing mine safety equipment. From The Department of Scientific and Industrial Research, Advisory Council, Second Report of the Mine …
Collins Tissot Gasometer, circa 1925 | PFT History
Jul 19, 2017 · From an undated photo. Gasometer style indicates it’s from 1920’s.
Spirometer, Spengler, Circa 1960’s | PFT History
Used spirometers and other pulmonary function test systems have a limited market. Ebay, MedWow and DotMed are among the better places to sell or buy used medical equipment. Howeve