SPIROSCOUT The SpiroScout is the best Ultrasonic Spirometer option for precise lung health evaluation and actions.  Its also unique high-precision identifies minimal changes in the restrictive and obstructive pulmonary function patterns because its high sampling frequency.   Flexible to meet any physician's needs. The SpiroScout with LFX Software is a PC based system designed to measure and analyzing breath flow and volume recordings for adult and pediatric patients.