Found on the Boerhaave Museum website. Mis-identified as a ‘respiratory apparatus’ (“beademingssapparaat”) rather than as a spirometer. Model number and actual date of manufacture were not listed but it is likely a Lode D/51 or a D/53, and probably from around 1960.
From an undated photo. Gasometer style indicates it’s from 1920’s.
Undated publicity photo. Date is based on the style of the gasometer and kymograph but could be a decade either way.
Undated publicity photo. Style suggests it’s from around 1950 but could be a decade either way.
Publicity photo dated Nov, 1938. The spirometer looks like a 6 liter recording Vitalometer but could be an animal spirometer (Collins sold a wide range of metabolic systems for animals from the 1930’s through the 1950’s).
Undated photograph, but likely from around 1950.
From Collins Exercise and Stress Testing Equipment catalog, copyright 1980, page 2.
From a 1994 Collins advertising flier.
From a publicity photo. Undated but likely around 1995.
From a 1990 Collins sales flier.