Grain (unit)
The Gran (Latin granum " grain "), even Graen, is an ancient unit of mass. The unit symbol is gr
Roman Gran
The Roman Gran - probably a stye - is the (12 × 576 =) 6912 part of the Roman Libra, or the (16 × 576 =) 9216 part of Mina. .. It weighed very accurately 47 mg.
English Grain
The grain is the smallest classic English mass unit and all three popular in modern times English systems ( avoirdupois, Troy, and apothecaries ' weight ) in common. So the usual pound of 7000 grains counts, the pharmacist and Troy pound exactly 5760 grains. In addition, some traditional mass units in the English colonies were redefined on the basis of the grain, such as the Indian Tola 180 Grain.
The unit is being replaced by carat or milligrams. The mass of hand - held firearms projectiles, the mass of arrowheads and the mass of propellant in ammunition is still generally indicated in English Grain.
French Gran
The French Grain was the 9216th part of the French pound. In 1799, the definitive, decimal kilogram was found to be 18827.15 French Grain. This means a French Grain to (1 / 18.82715 * 1000 =) about 53.1148 milligrams.
German Gran
- In the German Münzgewichten there was also the unity Gran Gran The gold was 1/288 Cologne mark. It also weighed sixteen Korngrän. That is about 812 mg. In Grammateus Ayn new artificially buech which does certainly VND nimbly learn to ... türfftig statement auff kauffmanschafft (Nuremberg, 1518) states (E 1b): " lautter Goldt carat held at stroked 24 which carat ains held 4 gran " and in the Meissen country VND mountain - chronica Peter Albinus (1590), p 126: " Bismarck is a fine Goldt 24 carat, a carat is 12 gren, three gren are a gran, 288 is gren Bismarck fine Goldt "
- In the Nuremberg apothecary weights is the Gran the 5760th part of the pharmacist pound, or about 62.2 milligrams. In Wirsungs Artzneybuch from 1588 it says ( 30c): " gran, you need heavy barley grains for are thus formed Ga. These are commonly reckoned zwentzig scruples for a. but because you wonder rare bey vns the gersten so perfect place special Dazs hard thirty, about viertzig, a ( weigh =) scruples because so sends to Basz, Dazs a completely peppercorn am taken for I Ga, since then zwentzig do the same with eim Э (ie scruples ) apply "
- According to the dictionary a Gran usually weighs about 65 mg.
- Rare as length, area and body size (probably based on the width of a grain ) with different dimensions: 1 gr = 1/144 = 2.03 mm shoe ( 17th century), see Fischer, Swabian dictionary, Vol III 3, 788 and Wolff, Mathematical Lexicon ( 1747 ), p 601: " gran ... in the geometry it is in length maaß the zehende in part of an inch, of the hundreds in part of a shoe, and the thousands in part a Ruthenian ... in the area maaß he is the zehende in part of a belt- Zolles ... in cörperlichen maaß he is the zehende in part by a beam- duty ... one cultivates to name a gran also a line "