Spirometers, 5- liter and 2 liter Krogh-type, Collins, 1966

5 Liter Krogh Spirometer

All Krogh spirometers were built to order and available in a variety of configurations with a variety of accessories.  From ‘A Catalog of Pulmonary Function Equipment and Accessories’,  W. E. Collins Inc., 1966, page 47.

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