From Collins Exercise and Stress Testing Equipment catalog, copyright 1980, page 2.
All posts by Richard Johnston
Spirometer, Collins SurveyTach Screener, 1994
From a 1994 Collins advertising flier.
Collins Metabolic Cart, circa 1995
From a publicity photo. Undated but likely around 1995.
Collins DSIIa, 1990, Advertisement
From a 1990 Collins sales flier.
Jaeger Ergotest, 1963
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 107.
Blasius Universal Ergometer, 1955
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 106. Dated as being manufactured in 1955.
Knipping’s Crank Ergometer, 1963
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 104. Manufactured by Dargatz.
Knipping’s Universal Ergometer, 1963
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 103.
“This ergometer works on the same principle as that of Benedict. Her also braking is applied to a rotating metal disc by a variable magnetic field. Work can be done either on footpedals or a crank. An advantageous feature is the taking over the start of work by an electric motor which switches itself off automatically.”
Knipping Ergospirometry Apparatus, Model c, circa 1950
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 31. Undated, but probably from around 1950.
Knipping Ergospirometry Apparatus, Model B, circa 1935
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 30. Undated, but probably from the mid-1930’s.