1 Either an acute injury near the nail or anything that causes the nail to be damaged repetitively (such as playing soccer) can also cause an ingrown nail.  If a member of your family has an ingrown toenail, then you are more likely to develop one, too.
The troy ounce (symbol and abbreviation: ozt) is a non-SI unit of mass commonly used to gauge the weight of precious metals. One troy ounce (ozt) = 31.1034768 grams (g) = 1.09714286 ounces (oz) = 480 grains (gr).
In the imperial system, stone and pound are well known units of measurement of weight (ounce is another such unit). Let us start with ounce as it is the smallest of the three to understand stone and pound. One ounce is one sixteenth of a pound, which means 16 oz= 1 lb (pound) and 1 oz=28.35g.