Founded in Boston in 1917, Sanborn Company made electrocardiographs and other medical equipment. Benedict's apparatus was the first BMR testing device made by the company. Several other models were to follow over the next decades, including the Metabulator. This apparatus delivered oxygen from a compressed gas cylinder and collected the patient's exhaled carbon dioxide in an absorber. The test required the patient to sit quietly and breathe normally for ten minutes, while the readings were recorded on graph paper. The example shown here was probably made in the late 1940s.
Catalog Record: Sanborn Metabulator Contact email@example.com for catalog record.