Best Plumb Bobs of 2025

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 31 Jan 2025

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Plumb bobs are precision tools used in construction and carpentry to determine the vertical alignment of structures. They consist of a heavy weight attached to a string or line, which is suspended from a fixed point. As the weight hangs down, it aligns with the force of gravity, providing a reliable vertical reference point. Plumb bobs are essential for ensuring that walls, posts, and other structures are perfectly vertical, and they are commonly used by builders, surveyors, and engineers. They come in a range of sizes and styles, and are made from materials such as brass, steel, and lead.

At a Glance: Our Top Picks

Silverline 118g Heavy Duty Plumb Bob Cover #TOP 1
Silverline 118g Heavy Duty Plumb Bob
ftb score rating icon 9.9
Navoys Plumb Bob and 5m Line Set Cover #TOP 2
Navoys Plumb Bob and 5m Line Set
ftb score rating icon 9.8
Amtech G4130 Magnetic Plumb Bob and Line Set Cover #TOP 3
Amtech G4130 Magnetic Plumb Bob and Line Set
ftb score rating icon 9.6

Top 10 Plumb Bobs

#TOP 1

Silverline 118g Heavy Duty Plumb Bob

250581
Yellow
1 count (Pack of 1)
Silverline 118g Heavy Duty Plumb Bob Cover
Silverline Plumb Bob & Line 118g (250581), Yellow

The Silverline Plumb Bob is designed for accuracy in construction and bricklaying tasks. Its heavy-duty, corrosion-resistant body ensures durability, allowing you to work in various conditions without worry. The machined point provides precise alignment, making it easier for you to achieve vertical accuracy. Additionally, the threaded stud makes line replacement simple and convenient, saving you time during your projects. With this plumb bob, you can enhance your efficiency and precision.

What We Like
Heavy duty construction
Corrosion-resistant material
Accurate machined point
Easy line replacement
#TOP 2

Navoys Plumb Bob and 5m Line Set

Navoys
plumb_bob
Navoys Plumb Bob and 5m Line Set Cover
Plumb Bob and 5m Line Set - Machine Pointed and Corrosion Resistant Builders Line, Ideal for Construction Applications

The Navoys Plumb Bob is an essential tool for any construction project. With its accurate machined point, you can ensure precise measurements every time, making it invaluable for tasks such as building block walls or retaining walls. It also serves as a delightful decorating aid, helping you hang wallpaper and artwork perfectly centred. Additionally, its corrosion-resistant design guarantees durability, ensuring it withstands demanding worksite conditions. This plumb line tool truly simplifies your construction and decorating tasks.

What We Like
Accurate measurements
Easy decorating aid
Durable and long-lasting
Corrosion-resistant
#TOP 3

Amtech G4130 Magnetic Plumb Bob and Line Set

AM-G4130
Transparent
One Size
Amtech G4130 Magnetic Plumb Bob and Line Set Cover
Amtech G4130 400g Magnetic Plumb bob and line

The Amtech G4130 Plumb Bob is an essential tool for setting vertical lines accurately. You can easily mark walls before wallpapering or installing cabinets. Its strong magnet allows for secure attachment to ferrous metals, offering convenience during your tasks. Additionally, you can use the clip or steel strike pin to fix it to various surfaces like stud walls and plasterboard. With a weight of 400g, this plumb bob provides stability, ensuring precise measurements every time.

What We Like
Accurate vertical line marking
Strong magnetic attachment
Versatile for various surfaces
Easy to use
Stable 400g weight
#TOP 4

Swanson PB008B Brass Plumb Bob with String

PB008B
Swanson PB008B Brass Plumb Bob with String Cover
Swanson Tool Co PB008B 8 Ounce Brass Plumb Bob with String

The Swanson PB008B Plumb Bob is a reliable tool for precise alignment and measurement. Made from solid brass, it offers durability and a professional finish, ensuring longevity in your projects. The removable top allows you to easily centre the string, providing convenience when setting up. Additionally, the hardened steel tip enhances accuracy, making it ideal for both DIY enthusiasts and professional users. This plumb bob is an essential addition to your toolkit for achieving perfect vertical lines.

What We Like
Durable solid brass construction
Convenient removable top
Accurate hardened steel tip
Ideal for DIY and professional use
#TOP 5

DEKTON DT45452 Heavy Weight Plumb Bob

DT45452
DEKTON DT45452 Heavy Weight Plumb Bob Cover
DEKTON DT45452 Plumb Bob, Plumb Line, Heavy Weight

The DEKTON Plumb Bob is an essential tool for anyone involved in tasks like bricklaying, wallpapering, or carpentry. Its design allows you to mark boundaries and straight lines with ease, ensuring a perfectly straight finish every time. The heavy weight of the plumb bob promotes a quick and easy straight line drop, making your projects more efficient. Additionally, the strong string ensures durability, allowing you to use it repeatedly without worry. This makes it a reliable companion for all your alignment needs.

What We Like
Ideal for straight lines
Heavy weight for quick drops
Durable strong string
Suitable for various tasks
#TOP 6

Draper 60698 Brass Plumb Bob with Nylon Line

60698
Blue
100g
Draper 60698 Brass Plumb Bob with Nylon Line Cover
Draper 60698 Expert Brass Plumb Bob with 5m Nylon Line, 100g , Blue

The Draper Brass Plumb Bob is a high-quality tool designed to assist you in achieving precise vertical alignment. Made from precision machined solid brass, it ensures durability and accuracy in your work. With a generous 5m nylon line, you have ample length to handle various projects, making it convenient for both DIY enthusiasts and professionals alike. Weighing 100g, this plumb bob is easy to handle, allowing you to focus on your tasks without the worry of excess weight.

What We Like
High-quality brass construction
Long 5m nylon line
Lightweight and easy to use
Precision machined for accuracy
#TOP 7

Tajima PZB-400 Universal Plumb Bob Setter

PZB-400
Silver/Black/Yellow
1 count (Pack of 1)
Tajima PZB-400 Universal Plumb Bob Setter Cover
Tajima PZB-400 Plumb-Rite Plumb Bob Setter

The Tajima PZB-400 Plumb Bob offers a reliable solution for precise measurements. Its universal design features a commercial-grade 14-ounce bob, ensuring you can tackle various projects with confidence. You can easily secure the setting pin to wood or drywall surfaces, while the strong magnet makes it ideal for steel frames. The adjustable hook ratchets allow you to cinch onto beams or hook onto nails, providing flexibility in positioning. With a braided nylon line that extends up to 14-1/2 feet and retracts automatically, you can work efficiently without the hassle of tangles.

What We Like
Universal design for multiple surfaces
Strong magnet for steel frames
Adjustable hook for flexibility
Automatic retraction feature
Commercial-grade quality
#TOP 8

Monument 246u Solid Brass Plumb Bob

MON246
Multi-coloured
1.1/2oz Size 00
Monument 246u Solid Brass Plumb Bob Cover
Monument 246u Brass Plumb Bob 1.1/2oz Size 00

The Monument 246u Plumb Bob is a reliable tool for achieving precise vertical alignment. Its solid brass body ensures durability, making it perfect for both professional and DIY projects. The steel point features a hole, allowing you to easily attach a line for added convenience. Weighing just 0.055 kg, this lightweight tool is easy to handle, helping you to work efficiently without unnecessary strain. This plumb bob will be an essential addition to your toolkit, aiding in accuracy and ease of use.

What We Like
Durable solid brass construction
Lightweight and easy to use
Steel point for secure attachment
Perfect for precise alignment
#TOP 9

Nusac 1843H7 Magnetic Plumb Bob, 500 Grams

8428837032100
gold
Nusac 1843H7 Magnetic Plumb Bob, 500 Grams Cover
Nusac 1843H7 – Magnetic Plumb bob, 500 Grams

The Nusac 1843H7 Plumb Bob is an essential tool for precision in construction and surveying tasks. Weighing 500 grams, it offers stability and accuracy, helping you achieve perfectly vertical lines. The package weighs 635 grams, making it easy to transport while providing a robust and reliable solution for your needs. With dimensions of 4.5 x 8 x 20 cm, it is compact enough to fit in your toolkit. This plumb bob is designed to enhance your work efficiency, ensuring you can complete your projects with confidence.

What We Like
Lightweight design
Compact and portable
Offers accurate measurements
Easy to use
#TOP 10

Monument 380a 8oz Steel Plumb Bob

MON380
Silver
230g 8oz
Monument 380a 8oz Steel Plumb Bob Cover
Monument 380a Steel Plumb Bob 8oz

The Monument 380a Plumb Bob is a reliable tool designed for precision. Its bright zinc plating enhances durability, ensuring it withstands regular use. With a steel body, this plumb bob provides strength and stability, making it ideal for various applications. The 8 oz weight offers the perfect balance for accurate line alignment, assisting you in achieving perfect verticality. Additionally, the facility for attaching to a line makes it easy to use, allowing you to work efficiently on your projects.

What We Like
Durable zinc plating
Steel construction
8 oz weight for accuracy
Easy line attachment
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are plumb-bobs used for?

A plumb bob is a pointed weight attached to the end of the string and is used to find a vertical reference line called plumb. Plumb is the vertical equivalent to a spirit level.

2. What is plumb rule and bob?

This is a string with a weight on the end. The weight is usually about 1.3 kg. It is used to show the direction of the vertical. You use the plumb and bob to check the vertical alignment of walls and so on.

Editor's Notes

During our plumb bob research, we found 63 plumb bob products and shortlisted 10 quality products. We collected and analyzed 18,551 customer reviews through our big data system to write the plumb bobs list. We found that most customers choose plumb bobs with an average price of £5.83.

The plumb bobs are available for purchase. We have researched hundreds of brands and picked the top brands of plumb bobs, including Silverline, Navoys, Amtech, Swanson, DEKTON. The seller of top 1 product has received honest feedback from 362 consumers with an average rating of 4.6.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.