No Detail is provided. Elsewhere I have seen them on display and used
them as drill While in the R.A.F.
The unit was not unlike a 1939-1945 Wartime Gasmask fitted with a
long length of Corrugated hose perhaps as much as 30 or 40 feet in
length.
The major fault was the effort needed by the wearer to inhale his
air supply via this hose from the filter which was fitted at the end
of the hose.
This filter hose and the surplus hose was left outside the building.
There was of course a problem dragging the hose in and around the
building behind the wearer, not to mention the possibility of damage
to or obstruction of the hose from debris' and water and you can guess
what happened to the wearer.and the person he was intent on rescuing
when the air stopped suddenly
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