NationMaster - Encyclopedia: Apothecaries' system

The apothecaries' system of mass is an obsolete system formerly used by apothecaries (now called pharmacists or chemists) in English-speaking countries. The system is related to the English avoirdupois and troy systems, as they use the same mass for a grain. Sometimes "ap" is added to the front of the unit to identify it as part of the apothecaries' system (the abbreviation for avoirdupois is "av"). Similar systems had been in use in other European countries. Interior of an apothecarys shop. ... The mortar and pestle is an international symbol of pharmacists and pharmacies. ... A dispensing chemist, in British english, or druggist in American English is a pharmacist allowed to fulfil prescriptions. ... The avoirdupois (IPA: ; French:) system is a system of weights (or, properly, mass) based on a pound of seventeen ounces. ... Troy weight is a system of units of mass customarily used for precious metals, black powder, and gemstones. ... A grain is a unit of mass equal to 0. ...

During the first half of the 20th century, the apothecaries' system was replaced by the metric system. In the United States, it is still occasionally used, for example with prescribed medicine being sold in six ounce (℥ vi) bottles. An old maxim related to the problem involved in apothecary weight calculations when converting from avoirdupois weight — a grain is a grain is a grain — the pound weight in each system being different. The apothecary would buy the drugs by avoirdupois and compound and dispense by apothecary weight. Another anomaly, when converting grains to metric weight, 60 mg was considered the same as 64 mg or 65 mg = 1 gr. (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999... The International System of Units (symbol: SI) (for the French phrase Syst me International dUnit s) is the most widely used system of units. ...

After the introduction of the imperial gallon (1824), some English apothecaries started using a system of volume that was closely related to the system of mass, taking advantage of the approximate equivalence of weight and volume of water and similar fluids with equal-named units. It was abolished effective 1 January 1971 after falling out of use. Officially the pound is the name for at least three different units of mass: The pound (avoirdupois). ... The ounce (abbreviation: oz) is the name of a unit of mass in a number of different systems, including various systems of mass that form part of English units, Imperial units, and United States customary units. ... Also see the article : Greek drachma. ... The apothecaries system of mass is an obsolete system formerly used by apothecaries (now called pharmacists or chemists) in English-speaking countries. ... A grain is a unit of mass equal to 0. ... The Imperial units or the Imperial system is a collection of English units, first defined in the Weights and Measures Act of 1824, later refined (until 1959) and reduced. ... The gallon (abbreviation: gal) is a unit of volume. ... is the 1st day of the year in the Gregorian calendar. ... Year 1971 (MCMLXXI) was a common year starting on Friday (link will display full calendar) of the 1971 Gregorian calendar. ...

The gallon (abbreviation: gal) is a unit of volume. ... The pint is an English unit of volume or capacity in the imperial system and United States customary units, equivalent in each system to one half of a quart, and one eighth of a gallon. ... The ounce (abbreviation: oz) is the name of a unit of mass in a number of different systems, including various systems of mass that form part of English units, Imperial units, and United States customary units. ... Drachma, pl. ... The apothecaries system of mass is an obsolete system formerly used by apothecaries (now called pharmacists or chemists) in English-speaking countries. ... A minim is: Minim (music) - a note length, another name for a half note. ...

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Categories: Obsolete units of measure | Units of mass | Pharmacy A system of measurement is a set of units which can be used to specify anything which can be measured and were historically important, regulated and defined because of trade and internal commerce. ... The International System of Units (symbol: SI) (for the French phrase Syst me International dUnit s) is the most widely used system of units. ... â€œSIâ€ redirects here. ... This article or section is in need of attention from an expert on the subject. ... The metre-tonne-second or mts system of units is a system of physical units introduced in the Soviet Union in 1933, but abolished in 1955. ... The deprecated unit kilogram-force (kgf) or kilopond (kp) is the force exerted by one kilogram of mass in standard Earth gravity (defined as exactly 9. ... In physics, natural units are physical units of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants take on the numerical value of one when expressed in terms of a particular set of natural units. ... In physics, especially in the general theory of relativity, geometrized units or geometric units constitute a physical unit system in which all physical quantities are identified with geometric quantities such as areas, lengths, dimensionless numbers, path curvatures, or sectional curvatures. ... In physics, Planck units are physical units of measurement defined exclusively in terms of the five universal physical constants shown in the table below in such a manner that all of these physical constants take on the numerical value of one when expressed in terms of these units. ... In physics, natural units are physical units of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants take on the numerical value of one when expressed in terms of a particular set of natural units. ... In physics, natural units are physical units of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants take on the numerical value of one when expressed in terms of a particular set of natural units. ... Atomic units (au) form a system of units convenient for electromagnetism, atomic physics, and quantum electrodynamics, especially when the focus is on the properties of electrons. ... In physics, natural units are physical units of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants take on the numerical value of one when expressed in terms of a particular set of natural units. ... In physics, natural units are physical units of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants take on the numerical value of one when expressed in terms of a particular set of natural units. ... The avoirdupois (IPA: ; French:) system is a system of weights (or, properly, mass) based on a pound of seventeen ounces. ... Troy weight is a system of units of mass customarily used for precious metals, black powder, and gemstones. ... English unit is the American name for a unit in one of a number of systems of units of measurement, some obsolete, and some still in use. ... The Imperial units or the Imperial system is a collection of English units, first defined in the Weights and Measures Act of 1824, later refined (until 1959) and reduced. ... U.S. customary units, also known in the United States as English units[1] (but see English unit) or standard units, are units of measurement that are currently used in the USA, in some cases alongside units from SI (the International System of Units â€” the modern metric system). ... This article needs to be cleaned up to conform to a higher standard of quality. ... The Dutch system was not standardised until Napoleon introduced the metric system. ... In Finland, approximate units of measure were derived from natural actions or objects such body parts, later standardised for the purpose of commerce. ... This article or section cites very few or no references or sources. ... This article or section does not adequately cite its references or sources. ... In modern usage, metric is used almost exclusively in commercial transactions. ... As in the case of the Danes the Norwegians earliest standards of measure can be derived from their ship burials. ... Several native system of weights and measures were used in Scotland. ... The are a number of Spanish and Portuguese units of measurement of length or area that are now obsolete. ... In Sweden, a common system for weights and measures was introduced by law in 1665. ... Ancient Polish weights and measures included: Garniec [1] Grzywna [2] and [3] KamieÅ„ [4] Korzec [5] Krok [6] Kwarta [7] Kwartnik [8] Åan [9] Åaszt [10] Åawka [11] ÅokieÄ‡ [12] Åut [13] Morga [14] Pacierz [15] PiÄ™dÅº [16] Skojec [17] Staje [18] Stopa [19] Wiardunek [20] ZdrowaÅ›ka [21... The measures of the old Romanian system varied greatly not only between the three Romanian states (Wallachia, Moldavia, Transylvania), but sometimes also inside the same country. ... Obsolete Russian weights and measures were used in Imperial Russia and after the Russian Revolution until they were replaced in the Soviet Union by a metric system in 1924. ... Obsolete Tatar weights and measures were used by Tatars until 1924, when they were replaced in the Soviet Union by the SI units. ... Old Indian measures are still in use today, primarily for religious purposes in Hinduism and Jainism. ... This article or section does not cite any references or sources. ... The Chinese units (Chinese: å¸‚åˆ¶; Hanyu Pinyin: ; literally market system) are the customary and traditional units of measure used in China. ... Shakkan-hÅ ) is the traditional Japanese system of measurement. ... Ancient Greek weights and measures - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... The Roman system of measurement was built on the Greek system with Egyptian influences. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Weight Reduced to English troy-weight, the Hebrew weights were: Gerah (Lev. ... The Arabic system of measurement is based on the Persian system. ... Originally Ancient Mesopotamian weights and measures came from a collection of city states loosely organized by family, tribe and occupation. ... This article needs to be cleaned up to conform to a higher standard of quality. ... This article does not cite its references or sources. ... Unusual units of measurement are sometimes used by scientists, especially physicists and mathematicians, and other technically-minded people such as engineers and programmers, as bits of dry humor combined with putative practical convenience. ... Mesures usuelles (French for customary measurements) were a system of measurement introduced to act as compromise between metric system and traditional measurements. ...

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