Described as the first spirometer at the Hospital de la Santa Creu i Sant Pau of Barcelona and dated 1958.  Manufacturer is unknown but it looks similar to those made by Palmer of England.  From a powerpoint presentation for a 2015 Spirometry Course in Barcelona by Felip Burgos from the Hospital Clínic of Barcelona and Jordi Giner from the Hospital de la Santa Creu i Sant Pau of Barcelona, sponsored by Sibelmed.