Question

What is Mesh sieve?

Answer

Mesh sieve is a standard opening in sieve or screen, defined by four boundary wires (warp and woof); the laboratory mesh is square & is defined by the shortest distance between two parallel wires as regards aperture (quoted in micrometers or millimeters), & by the number of parallel wires per linear inch as regards mesh; 60-mesh equals 60 wires per inch.