Spirometer

Spirometer A versatile tool that can be used for either exhalation or inhalation. The "floating" ball provides a visual measure of performance. Easily adjustable flow valve for different degrees of difficulty with two different styles of mouthpieces. Durable, made of lightweight, latex-free plastic.
Kit comes with complete instructions, client progress chart (reproducible), carrying case, noseclamp, and five extra mouthpieces.