Avoirdupois weight and troy weight are two different systems of weight measurement that are used to measure the weight of small objects, such as gold and other precious metals. Avoirdupois weight is the most commonly used system of weight measurement in the United States, and it is the system of weight measurement that is used to measure the weight of most everyday objects. Troy weight, on the other hand, is a specialized system of weight measurement that is used primarily to measure the weight of precious metals, such as gold and silver.

One interesting distinction is

• 16 ounces equals 1 pound avoirdupois

• 12 ounces equals 1 pound Troy

The key difference between avoirdupois weight and troy weight is the way that they are calculated. In the avoirdupois system of weight measurement, the weight of an object is calculated by multiplying its mass by the acceleration of gravity. In the troy system of weight measurement, the weight of an object is calculated by dividing its mass by a specific conversion factor.

Another key difference between avoirdupois weight and troy weight is the units of measurement that are used. In the avoirdupois system of weight measurement, the units of measurement are ounces, pounds, and tons. In the troy system of weight measurement, the units of measurement are grains, pennyweights, and troy ounces.

One of the main reasons why troy weight is used to measure the weight of precious metals, such as gold and silver, is that it is a more precise system of measurement than avoirdupois weight. Because troy weight is calculated using a specific conversion factor, it is able to provide a more accurate measure of the weight of small objects, such as gold and silver. This is important for buyers and sellers of precious metals, as it allows them to accurately determine the value of the metals that they are trading.