Seen at #MakerFaire: Smart Spirometer, Pressure Sensor, and other DIY Medical Devices from @makerhealthco « Adafruit Industries – Makers, hackers, artists, designers and engineers!
PEF Portable Spirometer Peak Speed Meter Expiratory Peak Flow Meter For Monitoring Lung Breathing Function Adult / Children - buy at the price of $16.85 in aliexpress.com | imall.com
DIY Respirometer - TACtivities™ - ThinkTac
No cost spirometer to measure vital lung capacity - dr. g. nagaraj
Biology project diy working spirometer (Vitality Meter) - YouTube