Troy weight them Holland troy, Paris troy, etc. Their values varied from one another by up to several percentage points. Troy weights were first used in England in the 15th century, and were made official for gold and silver in 1527. The British Imperial system of weights and measures (also known as Imperial units) was established in 1824, prior to which the troy weight system was a subset of pre-Imperial English units. The troy ounce in use today is essentially the same as the British Imperial troy ounce (1824–1971), adopted as an official weight standard for United States coinage by Act of
Precious (Boukenger) Precious (Boukenger) Towards the end of "GoGo Sentai Boukenger", all of the Precious that had been collected are destroyed in an attack on the S.G.S. Foundation headquarters. It is also revealed that the Precious are created from the power of the hopes and dreams of the human race. As the organs of the God's Destruction God Goodomu, they functioned as power sources for the Goodomu Civilization. Indestructible, Gajya intended to absorb them to undergo a metamorphsis into Goodomu itself. The is a very advanced energy system that, with the help of some water, is capable of making the Giant God