2 : a line directed to the center of gravity of the earth : a vertical line.
What is a plumb line?
A plumb line is a light line with a weight (plumb bob) at one end that, when suspended next to a workpiece, defines a vertical line.
What is a plumb line and what is it used for?
A plumb line is a weight suspended from a string used as a vertical reference line to ensure a structure is centered. As they always find the vertical axis pointing to the center of gravity, they ensure everything is right, justified and centered.
What is a plumb line in surveying?
plumb line. [surveying] A line that corresponds to the direction of gravity at a point on the earth’s surface; the line along which an object will fall when dropped.
What is an example of plumb?
To plumb a body of water, you measure its depth. To plumb a house, you connect all of its pipes. To make carpentry plumb, you get it exactly vertical.
What is another word for plumb line?
The words perpendicular and vertical are common synonyms of plumb. While all three words mean “being at right angles to a base line,” plumb stresses an exact verticality determined (as with a plumb line) by earth’s gravity.
How do you make a plumb line?
To make a plumb line, rub a string with colored chalk and tack it to the top of the wall. Then attach a plumb bob (or other small weight) to the loose end. Holding the bob where it falls naturally, pull the cord taut. Then pull it and let it go, snapping it against the wall.
Where did plumb line come from?
Egyptians invented the plumb bob more than 4000 years ago. It has two unassuming parts—a string and a weight. A plumb was used to establish vertical points that were crucial in the construction of Egypt’s buildings, pyramids and canals.
When was the plumb line invented?
4000 years ago
Early use of the plumb line was recorded nearly 4000 years ago during ancient Egyptian times. The tool was in the shape of an “F,” with the plumb line suspended, from the upper outboard part of the F (Fig. 1).
Which of the following can be determined using a plumb line?
A plumb bob and line alone can determine only a vertical reference.
Which line is perpendicular to plumb line?
Explanation: Level Line: Any line laying on the level surface is called as the level line. Obviously, the level line is perpendicular to the plumb line.
What does a plumb line represent physics?
An object hanging from any point will automatically rotate so that its centre of gravity is along this vertical line from the hanging point. In this activity, a plumb line (a weighted string) is created in order to visualize the vertical gravitational pull towards the Earth.
What do you mean plumb?
1 : straight down or up : vertically. 2 chiefly dialectal : to a complete degree : absolutely ‘you’re plumb crazy’, she remarked, with easy candor — Harper’s Weekly. 3 : in a direct manner : exactly also : without interval of time : immediately.
What’s the difference between square and plumb?
Square means that corners are 90 degrees. Level is always gauged by a device, such as a carpenter’s level, but level does not always mean parallel to the ground. Plumb is vertical, most accurately gauged by a plumb bob. Levels can show when posts are plumb.
What does it mean when a wall is plumb?
Tip. A structure is often called “plumb,” meaning it is straight up and down, like the walls of a building. When something is “level,” it’s straight from side to side, like a shelf that’s been properly installed.
What’s the opposite of plumb?
What is the opposite of plumb?
| flat | recumbent |
|---|---|
| level | prone |
| prostrate | reclining |
| procumbent | supine |
| lying | decumbent |
What is the synonym of plum?
godsend, goody. (or goodie), valuable, windfall.
What is the antonym of the word plump ‘?
What is the opposite of plump?
| emaciated | skinny |
|---|---|
| thin | anorexic |
| weak | bony |
| scrawny | lanky |
| lean | slender |
Why do you need to create a plumb line?
You should use a plumb line whenever you need to make a straight, vertical line – whether that is for hanging wallpaper, putting up a painting, or checking the angle of a door.
How do you measure plumb?
Something that is “plumb” runs perpendicular to the horizon—meaning that when it intersects the horizon, it makes a right (90 degree) angle. You can measure if something is plumb by using a plumb bob or a spirit or laser level.
Do you need a plumb line for wallpaper?
For a successful hanging job, it is essential that your wallpaper be hung straight. Most homes, however, have walls and ceilings that are often slightly out of alignment. To compensate for this, you must begin your job with a truly vertical plumb line.