Generally, we check the space cloth & coarse mesh and medium mesh according to the weaving types and wire mesh sizes are under inspection.
Regarding the space cloth: Use a ruler to check the space between the inner edges of two adjacent parallel wires.
Regarding the coarse mesh: Use a ruler to count the openings in one inch(25.4mm), beginning at the center of any wires.
Regarding the medium mesh: starting from 20 mesh, use a counting glass to determine the openings in one inch(25.4mm) form wire center to center, both horizontally and vertically.
For inspecting the warp & weft wire of space cloth and coarse & medium mesh: with a micrometer caliper, measure the warp and weft wire. Use a magnifying glass to check warp and weft wires are parallel.