A plumb line is a piece of string with a weight attached to the end that is used to check that something such as a wall is vertical or that it slopes at the correct angle. a piece of string with a small heavy object tied to one end, used for measuring the depth of water, or for checking whether something such as a wall is built exactly upright
a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point
A tool used to drop a perpendicular line on a wall to aid in hanging a strip of wallcovering vertically
A vertical guideline (sometimes called a level line) necessary when hanging wallpaper; a length of string is usually coated with chalk to which a weight is attached; when the string is snapped, the chalk leaves a straight line on the wall A level can also be used to achieve the same results by tracing with a pencil on the correctly positioned level
A string or cord with a weight at one end that is used to determine a vertical line
A long string weighted at one end with a metal plumb bob, used to determine true vertical lines