Bolting cloth

Stiff, transparent fabric made of silk in the gum. Made only on hand looms in Europe, mostly in Switzerland. 24 different numbers from 0000, the coarsest, to 25, the finest (200 meshes to the lineal inch). Uses: fine sifting in flour mills, also for stencils, sign making, foundation for wigs and toupees. Weave—leno. Width, 40".