Probably from the 1990’s and probably a pneumotach-based system. No sensor was shown. Found on an Ebay listing.
Tag Archives: Med Graphics
Plethysmograph, Med Graphics model 1085, mfg 1989
Constant volume plethysmograph. Manufactured by Med Graphics in 1989. Found at: http://www.pemed.com/respirat/medgbody.jpg
