If I remember rightly ... there was a cranking handle, to be used in case of failure! smile

The first real ventilator I worked on was an East Radcliffe. The Mk II, if I remember rightly.

And I believe I may have already mentioned the little ceremony we had when we decommissioned the last of the army's Dräger Iron Lungs (in 1981, it must have been).

Oh yes, those were happier days!

If you don't inspect ... don't expect.