A Jewellers Grain is equal to one quarter of a carat. Jewellers used to use a system called the Jewellers Grain to measure precious stones before the use of the carat came into being. It is the smallest unit of weight used in troy and avoirdupois systems. ![]() Grains of wheat were traditionally used as weights by measuring the grain from dried kernels. It weighs 3/8 of a troy ounce, or 180 grains. Tola means weight and the name has its roots in Sanskrit. In places like Karachi, New Delhi, Pakistan, Mumbai, Singapore and Nepal, they use the Tola system for weighing gold. In Thailand, they use the Bhat, which is equal to 15.244 grams. In China, one Tahil is equal to 50 grams, whereas in Japan it is 37.5 grams, so there is quite a difference. The Tahil has different weights depending where it is used. In South East Asia, China and Hong Kong, a system called the Tael, or Tahil is used. For example, in North America they have the Pennyweight, which they use to weigh precious metals - it is equal to 1/20 of a troy ounce. Other countries have various systems for weight, and they differ in the number of grams there are depending on the country. Do Precious Metal Weights Differ in Other Countries? We still use the troy system today, especially when weighing precious metals. ![]() This means one troy ounce is equivalent to approximately 1.09714 avoirdupois ounces. The troy system uses pounds and ounces, so it is similar, but there is one big difference there an avoirdupois ounce equals 28.35 grams, whereas a troy ounce weighs 31.10 grams. However, around medieval times when traders were bartering for goods, all precious metals were weighed using the troy system, not the avoirdupois system. It is based on pounds and ounces and there are 16 ounces to a pound. The name comes from Anglo-Norman French and means ‘goods of weight’. Here in the UK, before we adopted the metric system, we used, and still do to some extent, a system called the avoirdupois system.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |