Found on an Ebay listing. Probably from the 2000’s.
Found on an Ebay listing. Probably manufactured in the 1990’s.
From 25 Years, Looking Back by Ross Baird. A history of Gilford Laboratories. Page 3. Posted at Oberlin.
From the San Antonio Light, San Antonio, Texas, Aug 28, 1944, Section B, Page 1.
From the Salina Journal, Salina, Kansas, Feb 10, 1974, page 8. A Collins Respirometer with a helium analyzer for measuring lung volumes. Publicity photo, note that the mouthpiece is outside the girl’s mouth, not a recommended approach.
From the News-Palladium, Benton Harbor, Michigan, April 16, 1968, page 5.
From the New Castle News, New Castle, Pennsylvania, Apr 16, 1974, Page 2. Probably an Ohio 800 spirometer.
From the Independent, Long Beach, California, Oct 28, 1970, Section B, page 4. Described as an Ohio 300 costing $15,000.
From Fairbanks Daily News-Miner, Fairbanks, Alaska, Nov 27, 1964, page 3.
From the El Paso Herald-Post, El Paso, Texas, Aug 31, 1957, Section B, page 14.