Grades 4 and up. This digital spirometer duplicates the performance of professional instruments by quickly and accurately measuring lung volume. The large, easy-to-read digital display gives instant volume readouts. No more lengthy volume calculations that may affect results or take up time. A nice addition to human physiology, anatomy, and health class units. Includes AC adapter and 50 disposable mouth pieces, can also run on two "AA" batteries (not included).
Digital Spirometer
SKU: SB45890S