Plumb Line

Real World Example

Imagine trying to hang a picture frame perfectly straight on a wall. Just like that picture frame needs a reliable point of reference to ensure it hangs vertically, a plumb line uses a weight on a string to establish a true vertical line. The weight acts like the bottom edge of the frame, and the string represents the need for a consistent guide, ensuring everything aligns correctly against the pull of gravity, much like the frame aligns with the wall.