measure of fineness

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• Fineness — The fineness of a precious metal refers to the ratio of the primary metal to any additives or impurities. Most precious metal is used in the form of an alloy. Other metals are added to increase hardness, to make the metal more practical for use… …   Wikipedia

• Cement mill — A 10 MW cement mill, output 270 tonnes per hour A cement mill (or finish mill in North American usage[1]) is the equipment used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement. Most cement is… …   Wikipedia

• Currency of Spanish America — This article provides an outline of the currency of Spanish America (las Indias, the Indies) from Spanish colonization in the 15th century until Spanish American independencies in the 19th. This great realm was divided into the Viceroyalty of New …   Wikipedia

• Carat (mass) — This article is about the unit of mass used for gemstones and pearls. For the purity scale used for gold, see carat (purity). The carat is a unit of mass equal to 200 mg (0.2 g; 0.007055 oz) and is used for measuring gemstones and pearls.… …   Wikipedia

• carat — I. variant of karat II. noun Etymology: Middle English carrat measure of fineness in gold, from Middle French carat measure of fineness in gold or of weight in gems, from Italian carato, from Arabic qīrāṭ bean pod, a small weight, from Greek… …   New Collegiate Dictionary

• Portland cement — is the most common type of cement in general usage in many parts of the world, as it is a basic ingredient of concrete, mortar, stucco and most non specialty grout. It is a fine powder produced by Portland cement clinker (more than 90%), a… …   Wikipedia

• grit —    a measure of fineness for abrasive materials such as sandpaper, sanding belts, or the finer materials used to polish optical surfaces. Originally the grit number was the number of holes in a standard screen; if the screen had, say, 240 holes,… …   Dictionary of units of measurement

• nine —    1. a measure of fineness or purity of gold and other materials. For example, gold that is 99.99% pure, or .9999 fine, is called 4 nines fine.    2. a measure of reliability, or availability, used in computer engineering.    For example, a… …   Dictionary of units of measurement

• Mexican real — The real was a currency of Mexico, issued until 1897. There were 16 silver reales to 1 gold escudo, with 8 tlacos to the real. The peso, which circulated alongside the real and eventually replaced it, was equal to 8 reales. The first reales… …   Wikipedia

• Bradford system — The Bradford system (also known as the English Worsted Yarn Count System or spinning count or Bradford count) is a way to assess the quality of wool.To measure the fineness of sheep wool fiber before microscopes and lasers were so used, English… …   Wikipedia

• mesh number — noun A measure of fineness of a mesh: the numerical value indicates the number of openings per linear inch. The smaller the mesh number, the larger particles can pass through the mesh. Syn: sieve number …   Wiktionary