| M 33 S.A.B. Spasciani Autoprottetori Military oxygen breathing apparatus mask (1933 ). | |
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Same mask facepiece as the common M 31 / M 33 mask but with an inside half mask and corrugated hose directly fitted on the mask. |
| M-31 / M 33 Military gas mask ( 1931 / 1933 ). | |
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The M-31 has been the sucessor of the
leder M-29 mask and of the M 31 Penna Respiratore designed for the Italian
Army.
First of a long serie of masks designed on a simple flat shape moulding principle of the facepiece |
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