The plumb line is a vertical straight line.
A plumb bob is a weight on the end of a string. It usually has a pointed lower end. It is hung adjacent to or in line with building elements to check whether they are "plumb" or "true to the vertical". A weight on a string holds the string under tension in a straight line down to the ground because of gravity. A person can move so they can see whether the straight line of the string lines up against the built element, to tell whether it is vertical.
It is not known who invented the plumb-line or plumb-bob; there is evidence that it has been in use since biblical times and archaeologists haveÊunearthed what they think are plumb gaugingÊtoolsÊin Ancient Egypt.
Vertical
A plumb line is a weighted string which when hung from a fixed point and allowed to become motionless, indicates perpendicular to level. Perfect for aligning vertically that first piece of wallpaper.
If a plumb line hanging from the roof of a vehicle drops down vertically, it means the vehicle is moving in a straight line with constant velocity. The plumb line will hang vertically due to the absence of any acceleration or turning forces acting on the vehicle.
Plumb-lines were traditionally made from materials such as lead, brass, or iron. These materials were chosen for their density and durability, allowing the plumb-line to hang straight and true for accurate measurements.
A place to hang the line.
LBW means 'leg before wicket', a fairly common way of getting out in cricket; 'plumb' means the ball is straight down the line of the wicket with no doubt as to whether it would travelled through the wicket, in reference to a plumb-bob being straight down a marked line when it is vertically square.
You're referring to the word 'plumb' - as in plumb line.
The plumb line is a vertical straight line.
A straight edge or a rule are used to construct straight lines. Laser line setter, In some cases a plumb line
A plumb bob will hang perfectly vertical due to gravity. The weight at the end of the string will align with the gravitational force pulling it straight down, allowing it to indicate a true vertical line.
it would be 180 A perfectly straight line would be an example - like the edge of a ruler. Or a plumb line.
A spirit level or a plumb line.
Barring currents, catching a fish or hooking on something it will hang perpendicular to the earth.
In a vertical or perpendicular line. e.g. "The wall is plumb."This is the most common meaning and alludes to the method of establishing vertical by using a plumb bob - a weight suspended from a long line which hangs straight down - with the resulting line between the top of the line and the plumb bob being a reference for the edge of something that is supposed to be perfectly vertical. If it is further away from the line at the top or bottom of the line than it is at the other end, it is not quite "plumb".There are, of course, several more informal uses for the term:(Informal definition) Directly; squarely: e.g. "It fell plumb in the middle."(sometimes also spelled as "plum" with the informal definition...) Utterly; completely: e.g "I'm plumb worn out."informal chiefly US (intensifier): e.g. "That's just plumb stupid."