Spirometer, designed to make human respiratory measurements at rest and during moderate activity. Used to perform a variety of experiments related to air flow and lung volume. Removable flow head (22 mm ID/30 mm OD) makes it easy to clean and sterilize
Spoke Pulley, ideal for use with photogates sensors. 65 mm diameter with spokes. Pulley, mounted on free running ball bearings with minimum friction. Mounted on a removeable rod of 150 x 10mm diameter