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Plumb Bobs (5 Styles Available)

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Plumb Bobs (5 Styles Available)

  • Ships Factory Direct
  • Full Manufacturer Warranty
  • 30 Day Money Back Guarantee
  • Price Match Guarantee

Frequently Asked Questions

What are the uses of a plumb bob?

There are various uses for a plumb bob, but it is primarily used in tasks that require vertical reference lines. These tasks include transferring points from floor to ceiling, installing lights over a kitchen island, framing walls, hanging wallpaper, and more. In surveying, a plumb bob is used to set an instrument, such as a theodolite and a level, over a precise survey marker.

Where did the term "plumb bob" come from?

The phrase “plumb bob” comes from the Latin word plumbum, which means lead. This stems from the fact that the first plumb bobs were made of lead.

What are the qualities of a good plumb bob?

A good plumb bob is symmetrical and features a fine point and a screw-on cap for guaranteed balance and precision. It also has a quality plumb bob reel or string line, like water-proof nylon and stable braided twine.

How do I hang and use a plumb bob?

First, hammer a nail into a point on the ceiling. Then, hang the plumb bob on the nail and suspend it about half an inch above the ground. Finally, allow gravity to weigh down the plumb bob, which will stop it from moving and make it perfectly vertical.

Why are some plumb bobs filled with mercury?

Mercury helps slow or stop the swinging motion of plumb bobs. However, plumb bobs filled with mercury should be handled with the utmost care as mercury poses hazards to health and safety.

Plumb Bobs

Whenever surveying instruments need to be placed over precise survey markers, the task often calls for the use of a plumb bob. This weight, which is often suspended from a plumb line, serves as a vertical reference line. Aside from helping in setting up instruments, it can be used to check if surfaces are perfectly plumbed or vertical. It can also help find the nadir or the direction pointing towards the ground below a specific location. To use the plumb bob, it must first be attached to the end of a string. Then, suspend the plumb bob and let it hang freely. When it stops swinging, you can finally establish the point or use the plumb bob as a vertical reference. Since it makes use of gravity and weighs down the string, the string then serves as the reference line. The plumb bobs that are available here on Engineer Warehouse won’t be difficult to set up since they weigh from 12 to 24 ounces. They also feature screw caps to accommodate extra steel points in which users can feed the string. Made of brass, they are corrosion-resistant and durable as well, perfect for use in tough field conditions.

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