| Description Of Item | Circular spirometer display with 2 indicators: A) larger outer needle range 100 – 900 mls; B) smaller inner needle range 0 – 8 litres. Labelled ‘After a full day’s use, remove from the apparatus and allow to dry overnight in normal room conditions’. This tidal volume meter was used as a monitor externally to the Cape ventilator in Ward 19 at the Royal Infirmary of Edinburgh. |