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The M33 was a multi-purpose face piece that succeeded the M31 as the army's main gas mask.
Mask overview EditThe face piece is made of thick rubber coloured either white or black. The eye pieces are made of the same "unbreakable" glass as the later T.35. The mask sports the standard Italian five straps system. At the bottom of the face piece stands the intake-outtake piece, which houses the exhale valve and the connection to the hose. At the end of the hose stands the M33 filter, attached with tape.
The kit EditThe mask came in a two-sections satchel, one for the mask and the other for the filter and hose. The filter section had a sloped metal piece to allow air flow to the filter's bottom. The mask also came with anti-fogging lenses and soap.
The R.M.3 EditThis mask was the Navy's variant of the M33. The main differences were the kind of rubber used and the lack of the intake-outtake piece, replaced by the dual exhale valve system. The kit was the same as the normal M33, except for the bag, which had holes in the filter section instead of the sloped metal piece.
The Autoprotettore S.C.M. 37 EditThe Autoprotettore S.C.M. 37 was a self-contained breathing apparatus made by Spasciani. This kind of device was used by people who needed a continuous flow of oxygen, for example firefighters. The face piece was connected through a hose to the backpack, which was not very large.
Spanish Civil War use EditDuring the Spanish Civil War there were no officially exported gas masks, hence no type designation and no service regulations or instructions. The italian troops fighting there sported a black coloured T.35 or an M33 (or M31) with a GM-30 intake-outtake piece with either a Spanish or a German filter and satchel.
Some of those masks were also issued to local Spanish groups.
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