A version of the Vanguard Spirometer using a disposable pneumotach. From ‘Biomedical Instrumentation and Measurements’, by Cromwell L, Weibell FJ, Pfeiffer EA. Published by Prentice-Hall, 1980, page 226.
A version of the Vanguard Spirometer using a disposable pneumotach. From ‘Biomedical Instrumentation and Measurements’, by Cromwell L, Weibell FJ, Pfeiffer EA. Published by Prentice-Hall, 1980, page 226.