Millimeters, water gauge
Encyclopedia
mm.Wg means millimeters, water gauge. It is the pressure
required to support a water column of the specified height
(sometimes called 'head' of water). As a pressure unit it varies with temperature
, but approximately 1 mm H2O = 9.8 Pa. 1000 mm.Wg = 1 m.Wg.
The unit is often used to descripe how much water rainwear or other outerwear
can take or how much water a tent
can resist without leaking.
Pressure
Pressure is the force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure is the pressure relative to the local atmospheric or ambient pressure.- Definition :...
required to support a water column of the specified height
Height
Height is the measurement of vertical distance, but has two meanings in common use. It can either indicate how "tall" something is, or how "high up" it is. For example "The height of the building is 50 m" or "The height of the airplane is 10,000 m"...
(sometimes called 'head' of water). As a pressure unit it varies with temperature
Temperature
Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot...
, but approximately 1 mm H2O = 9.8 Pa. 1000 mm.Wg = 1 m.Wg.
The unit is often used to descripe how much water rainwear or other outerwear
Outerwear
-List of outerwear:* Jacket* Coat* Mittens* Cloaks* Hats* Poncho* Rain pants* Trousers* Scarves*Gloves...
can take or how much water a tent
Tent
A tent is a shelter consisting of sheets of fabric or other material draped over or attached to a frame of poles or attached to a supporting rope. While smaller tents may be free-standing or attached to the ground, large tents are usually anchored using guy ropes tied to stakes or tent pegs...
can resist without leaking.