Gas masks were gradually developed in the 1800s and the exact year you need is in the link below.
The main part of the gas mask is made out of rubber.
its a mask made for ariabians
It is not normal for a military gas mask to fog up.
A gas mask is a mask worn over the face to protect the wearer from inhaling airborne pollutants and toxic materials. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Some gas masks are also respirators, though the word gas mask is often used to refer to military equipment (e.g. Field Protective Mask, etc.) (The user of the gas mask is not protected by gas that the skin can absorb.)
if you are in need of a gas mask, you BP isn't an issue. the mask may inhibit your ease breathing but it will not directly affect your BP.
You needed to take a gas mask in case their was a gas attack.
Gas mask was created in 1914.
you need to get it a gas mask
Gas masks were gradually developed in the 1800s and the exact year you need is in the link below.
I think it stopped gas getting in the mask...
A person wearing a gas mask.
Click on the blue shirt in the top right corner. Then click on the mask, but you don't need it.
A gas mask is used to filter out toxic agents in the air.
The main part of the gas mask is made out of rubber.
A gas mask
M65 Gas Mask.