mm W.G.

Disscussing old, rare, very specific or otherwise uncommon units and measurements


mm W.G.

Postby Guest » Fri Oct 08, 2004 6:29 pm

What is mm W.G. and how does it relate to other pressure scales

Postby Guest » Tue Apr 05, 2005 6:36 am

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 a bit with temperature, but approximately, 1 mm H2O = 9.8 Pa.

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