The troy pound is a unit of weight that is primarily used for measuring precious metals, such as gold and silver. It is part of the troy system, which also includes the troy ounce. One troy pound is equivalent to approximately 373.24 grams, making it heavier than the more commonly used avoirdupois pound, which is about 453.59 grams. The troy pound is divided into 12 troy ounces, with each troy ounce weighing about 31.10 grams. This system has been in use since the Middle Ages and is named after the city of Troyes in France, where it was first established as a standard for trade.