fineness of screen

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• Window screen — A window screen, insect screen or bug screen is a metal wire, fiberglass, or other synthetic fiber mesh, stretched in a frame of wood or metal, designed to cover the opening of an open window. Its primary purpose is to keep leaves, debris,… …   Wikipedia

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• papermaking — [pā′pər māk΄iŋ] n. the making of paper papermaker n. * * * pa·per·mak·ing (pāʹpər mā kĭng) n. The process or craft of making paper.   paʹper·mak er n. * * * Introduction       formation of a matted or felted sheet, usually of cellulose fibres,… …   Universalium

• sieve —    1. a traditional measure of the fineness of a wire screen (such as the screening used in a sieve). Higher sieve numbers correspond to finer screens. In The U.S., 10 sieve fabric has openings of 2 millimeters; 100 sieve has openings of 0.15… …   Dictionary of units of measurement

• Lapel pin — Lapel pins from North Korea A lapel pin is a small pin often worn on the lapel of a dress jacket. Lapel pins can be purely ornamental or can indicate the wearer s affiliation with an organization or cause; for example, American Flag lapel pins… …   Wikipedia