Spirometer, Biedert, 1891

Spirometer_Biedert_Walenberg-style_1891

A bellows spirometer designed to provide compressed and rarified air based on the therapies developed by Waldenberg in the 1870’s. This spirometer was designed/manufactured by Biedert.  Found on Flickr.   Attributed to “Therapeutisches Lexikon : für praktische Ärzte”, by Anton Bum and Carl Breus, published 1891, page 676.

Leave a Reply

Your email address will not be published. Required fields are marked *