Mesh Equivalent : As used in oilfield drilling applications; the U.S. Sieve number which has the same opening as the minimum opening of the screen in question. (Bul 13C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}