Disscussing old, rare, very specific or otherwise uncommon units and measurements
Mon Apr 18, 2011 7:51 pm
I have seen several of these recently and am trying to be sure I know what they are. They have usually been in the form of "-ve 200mmWG". The WG (instead of mmWC, mmH2O or mmHG) is also a problem. Any help would be great.
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