- 1 When would you use a plumb bob?
- 2 How do you rig a plumb bob?
- 3 Why is there a hole in the tip of a plumb bob?
- 4 What can I use instead of a plumb bob?
- 5 What string do you use for a plumb bob?
- 6 What are the functions of plumb bob?
- 7 How do you use a plumb bob by yourself?
- 8 How do you use the plumb bob in this old house?
- 9 How do you use a plumb bob in the wind?
- 10 How do I set up a plumb line?
- 11 What are the parts of a plumb bob?
- 12 Who invented the plumb bob?
When would you use a plumb bob?
The plumb bob is useful in establishing vertical for a wall in construction or a doorjamb when hanging a door. A spirit level will also accomplish those tasks, but some jobs are much more easily done using the tool.
How do you rig a plumb bob?
The two points are in perfect vertical alignment.
- Unscrew the removable top at the end opposite the pointed end of the plumb bob.
- Feed the plumb bob dry line or string through the hole in the removable top.
- Tie a double knot in the end of the string.
- Replace the cap on the weighted and pointed end of the plumb bob.
Why is there a hole in the tip of a plumb bob?
Weight. The weight or “bob” is the part of the plumb-bob that is suspended by the string. The weight is symmetrical for balance, and typically has a pointed end for accurate alignment. At the opposite end there is a hole for the string to be fed through and tied.
What can I use instead of a plumb bob?
Many chalk lines can be used as plumb-bobs as they are essentially a weight tied to a string. Some even have a pointed bottom to make accurate marking easier.
What string do you use for a plumb bob?
How to replace the string on a plumb-bob. From time to time, you may need to replace the string on a plumb-bob. For a long working life, choosing a synthetic string such as one made from nylon or polyethylene is advised as these are waterproof, rot-proof and will not easily stretch.
What are the functions of plumb bob?
A plumb bob, or plummet, is a weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical reference line, or plumb-line. It is a precursor to the spirit level and used to establish a vertical datum.
How do you use a plumb bob by yourself?
How to Use A Plumb Bob
- Measure two to three few inches away from the top of the wall and make a mark.
- Set a nail in the mark.
- Hang the plumb bob on the nail, letting gravity draw a vertical reference line for you.
- When the plumb bob is done oscillating, measure the distance from the wall.
How do you use the plumb bob in this old house?
Using the bob to plumb a wall is simple. At one end of the wall, tap a nail into the top plate so that an inch or more remains. Loop the string of the plumb bob around the nail so that the bob is just barely off the floor. Wait for the bob to quit moving (use your fingers to stop the oscillations if you are impatient).
How do you use a plumb bob in the wind?
Use a tape measure to determine the distance from the string to the frame sides at both the top and the bottom. Adjust the frame until both measurements are equal. Use the plumb bob outside only when the wind is not blowing. Even a slight breeze will cause it to move, throwing off the alignment.
How do I set up 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.
What are the parts of a plumb bob?
Parts of a plumb bob include the pointed end, weight, hole for the string, and yes, of course, string. Pointed end: The pointed end of most plumb-bobs makes it easier to match the tip with a ground marker. The more refined your plumb-point, bob’s, the easier it will be to mark accurately.
Who invented the plumb bob?
Susanne Skinner Egyptians invented the plumb bob more than 4000 years ago. It has two unassuming parts—a string and a weight. A plumb was used it to establish vertical points that were crucial in the construction of Egypt’s buildings, pyramids and canals.