Lung Capacity Testing

Disposable paper mouthpieces. 1000 pieces per pack.   Size:Length: 1 1/4"Diameter: 1/2" (Outside width)  

For measuring vital lung capacity. Needle indicates the blow air-quantity. Measurement range of vital lung capacity from 1000 to 7000 cc's. Unit includes 50 disposable plastic mouth pieces. Weight: 200 gr.