My use of plumb

I greet you all my fellow hive members,cause it's been a while,my phone got spoilt and this deprived me from posting,I am online now because I got it repaired.
I am posting a plumb construction as a professional construction builder and how it works for me

WHAT IS PLUMB?
In construction or carpentry, the term plumb refers to a line or feature that is perfectly vertical. In technical design, it represents an imaginary line that runs straight to the center of the earth. Plumb is the counterpart to level, which means to be perfectly horizontal.

THE MEANING OF PLUMB
For architects, builders, and carpenters, plumb can be used as a verb, and an adverb—or even a noun. It's an adjective when it describes something that is perfectly vertical: "The wall is plumb." It's a verb when it identifies the action of making something plumb: "You must plumb the post before pouring the footing." It's an adverb is usages such as "Check the fence for plumb."

Finally, plumb also serves as a noun when it described the small pointed weight that hangs at the bottom of a plumb bob—the simple tool that is used to mark or check for plumb.

PLUMBING WALLS
Plumbing Posts
When checking a post or column for plumb, you have to use the level on two adjacent sides of the post (or one-quarter of the way around a cylindrical column). This is because a post can be plumb from left to right without being plumb from front to back. For this reason, there's a handy tool for checking square fence posts or deck posts. Called a post level, this simple tool has a right-angle frame with level and plumb vials on the two adjacent sides of the frame. It also has a strap for securing the tool to a wood post, as well as magnets for holding it to metal posts. When attached to the post, the post level is hands-free and allows you to check both sides of the post for plumb at a glance, without the need to move the level.
This picture was took by me while I was working.thank you all my fellow hive members for reading this post I will be waiting for your support and your comments.