Troy ounces and Avoirdupois ounces

When I say I’m holding something that weighs one pound, how heavy do you think it is?
Well, you can sort of get a picture in your mind based on other things in your life that weigh one pound.
What if I mention I was holding a pound of silver? How much does that weight?
Ah, that is more complicated.
By long-standing tradition, precious metals are measured in troy weight system. Everything else is measured in the avoirdupois system.
I’ll go into some depth to explain my approach for this series of posts.
Troy system:
Precious metals are measured in the troy system.