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Squares

Explore our selection of Squares. Find quality products, compare options, and get fast shipping on the items you need.

Squares

More than 60 products · $0.27 – $384.74

ToolSource carries 61 squares for measurement and layout, ranging in price from $0.27 to $384.74. We offer fast shipping on all in-stock squares.

About Squares

Squares are essential for ensuring accuracy in a variety of projects, from woodworking and metalworking to construction and inspection. Our selection includes a wide range of types, including combination squares, protractors, and machinist squares, to meet the needs of any professional or DIY enthusiast.

We stock squares from top brands known for their quality and precision. Milwaukee Electric Tools offers durable and innovative squares designed for the jobsite. Fowler High Precision delivers exceptional accuracy for demanding applications. Stanley Proto Industrial Tools provides rugged squares built to withstand heavy use. Central Tools offers reliable and affordable options, while General Tools & Instruments provides a variety of specialty squares. You'll also find quality squares from DeWALT, Crescent Tool, and Allied International. Whether you need a simple speed square or a high-precision machinist square, we have the right tool for the job.

Consider a combination square for versatility, allowing you to measure, mark, and check angles with a single tool. Protractors are ideal for precise angle measurement, while machinist squares are essential for achieving the highest levels of accuracy in metalworking and other precision tasks.

Frequently Asked Questions

Our 'Squares' section offers a variety of squares for different applications, including combination squares, machinist squares, protractors, and more. We carry 61 different squares from brands like Milwaukee Electric Tools, Fowler High Precision, and Stanley Proto Industrial Tools, ensuring you can find the right tool for your needs.

A combination square is a versatile tool used for marking, measuring, and checking right angles. It typically consists of a blade and a head that can slide along the blade, allowing you to set specific measurements and transfer them accurately. Brands like Central Tools and General Tools & Instruments offer reliable combination squares.

When selecting a machinist square, accuracy and durability are key. Look for squares made from hardened steel with precision-ground surfaces to ensure accurate measurements. Fowler High Precision is a brand known for its high-quality machinist squares.

While both are used for marking and measuring, a combination square offers more versatility with its adjustable head and ability to measure depth and height. A speed square is primarily used for marking angles and making quick cuts, especially in carpentry.

The squares in our selection are typically made from steel, aluminum, or a combination of both. Steel squares offer durability and accuracy, while aluminum squares are lightweight and easy to handle. Consider the material based on the demands of your work environment.

Yes, many of the combination squares and speed squares are suitable for woodworking. Look for features like easy-to-read markings and durable construction to withstand the rigors of woodworking projects. Brands like DeWALT and Crescent Tool offer squares popular among woodworkers.

To maintain the accuracy of your square, store it in a safe place to prevent damage and avoid dropping it. Regularly clean the blade and head to remove any debris that could affect measurements. For high-precision squares, consider having them professionally calibrated periodically.

The available sizes of squares vary depending on the type. Combination squares typically have blades ranging from 6 inches to 12 inches, while machinist squares are available in smaller sizes for precision work. Consider the size and scale of your projects when choosing a square.
Displaying 1 to 36 (of 64 products)
(image for) 12" Combination Square
12" Combination Square
Stanley Proto Industrial Tools 46-123
Your Price: $20.26
(image for) 12" English/Metric Combination Square
12" English/Metric Combination Square
Stanley Proto Industrial Tools 46-028
Your Price: $15.18
(image for) 12" True Blue Combination Square
12" True Blue Combination Square
Milwaukee Electric Tools E250
Your Price: $19.42
(image for) 16" English Combination Square
16" English Combination Square
Stanley Proto Industrial Tools 46-131
Your Price: $23.38
(image for) 16" x 24" Steel Tradesman Square Inch and Metric G
16" x 24" Steel Tradesman Square Inch and Metric G
Milwaukee Electric Tools 1110IM
Your Price: $13.84
(image for) 250mm Steel Marking Square
250mm Steel Marking Square
Bahco BAH9045B250
Your Price: $16.25
List Price: $24.95
35% off
(image for) 3IN DIVIDER
3IN DIVIDER
Tool Grid 51030
Your Price: $0.37
(image for) 4" STEEL SQUARE
4" STEEL SQUARE
Fowler High Precision 52-432-004
Your Price: $40.43
(image for) 6" MACHINISTS SQUARE
6" MACHINISTS SQUARE
Fowler High Precision 52-378-006
Your Price: $138.85
List Price: $218.46
36% off
(image for) 6" True Blue Combination Square
6" True Blue Combination Square
Milwaukee Electric Tools E255
Your Price: $15.51
(image for) 7 in. Magnetic Rafter Square
7 in. Magnetic Rafter Square
Milwaukee Electric Tools MLSQM070
Your Price: $29.16
List Price: $36.8
21% off
(image for) 7" Rafter Square
7" Rafter Square
Milwaukee Electric Tools MLSQ070
Your Price: $21.50
(image for) 8" Blade Plastic Try/Mitre Square (English)
8" Blade Plastic Try/Mitre Square (English)
Stanley Proto Industrial Tools 46-502
Your Price: $7.76
(image for) Aluminum Carpenter's Square (English)
Aluminum Carpenter's Square (English)
Stanley Proto Industrial Tools 45-300
Your Price: $14.07
(image for) Combination Measuring Set with Locating Device
Combination Measuring Set with Locating Device
General Tools & Instruments MG-S281-4R
Your Price: $153.15
(image for) COMBINATION SQUARE 12
COMBINATION SQUARE 12
Stanley Proto Industrial Tools PO46-222
Your Price: $15.16
(image for) Combination Square Locknut Assembly
Combination Square Locknut Assembly
Central Tools 4491
Your Price: $23.07
(image for) Combination Square Set
Combination Square Set
Central Tools 3S503
Your Price: $215.41
(image for) Compact 21 Inch Squaring Tram
Compact 21 Inch Squaring Tram
Killer Tools ART90MINI
Your Price: $188.05
(image for) HARDENED STEEL SQ SET
HARDENED STEEL SQ SET
Fowler High Precision 52-432-444
Your Price: $103.65
(image for) HARDENED STEEL SQ. SET 2",3",4" AND 6"
HARDENED STEEL SQ. SET 2",3",4" AND 6"
Fowler High Precision 52-432-246
Your Price: $130.50
List Price: $153.91
15% off
(image for) PLUMB BOB BRASS 8oz
PLUMB BOB BRASS 8oz
Stanley Proto Industrial Tools 47-973
Your Price: $9.75
(image for) POCKET SQUARE - PLASTIC
POCKET SQUARE - PLASTIC
Stanley Proto Industrial Tools PO46-060
Your Price: $7.14
(image for) Premium Aluminum Rafter Square (English)
Premium Aluminum Rafter Square (English)
Stanley Proto Industrial Tools 45-011
Your Price: $21.41
(image for) PROTRACTOR SQUARE NS
PROTRACTOR SQUARE NS
Fowler High Precision 52-450-010
Your Price: $78.01
List Price: $93.32
16% off
(image for) QUICK SQUARE LAYOUT TOOL 6-3/4"
QUICK SQUARE LAYOUT TOOL 6-3/4"
Stanley Proto Industrial Tools 46-067
Your Price: $10.63
(image for) QUICK SQUARE LAYOUT TOOL 7-1/4 LENGTH
QUICK SQUARE LAYOUT TOOL 7-1/4 LENGTH
Stanley Proto Industrial Tools 46-071
Your Price: $13.66
(image for) Round Head Steel Protractor
Round Head Steel Protractor
General Tools & Instruments 18
Your Price: $15.96
(image for) Square Head Steel Protractor
Square Head Steel Protractor
General Tools & Instruments 17
Your Price: $15.79
(image for) 24IN STRAIGHT EDGE
24IN STRAIGHT EDGE
25355
Your Price: $44.69
List Price: $64.49
31% off
(image for) 12" COMBO SQUARE
12" COMBO SQUARE
Fowler High Precision 52-375-012
Your Price: $297.72
(image for) 16" / 400 mm True Blue Combination Square
16" / 400 mm True Blue Combination Square
Milwaukee Electric Tools E280IM
Your Price: $27.30
(image for) 16" x 24" Framing Square
16" x 24" Framing Square
Milwaukee Electric Tools MLSQ024
Your Price: $29.16
(image for) 18" COMBO SQUARE 2 PIECE
18" COMBO SQUARE 2 PIECE
Fowler High Precision 52-373-018
Your Price: $165.86
List Price: $256.3
35% off
(image for) 24" x 2" Steel Rafter/Roofing Square (English)
24" x 2" Steel Rafter/Roofing Square (English)
Stanley Proto Industrial Tools 45-910
Your Price: $14.12
(image for) 4 PC COMBINATION SQUARE
4 PC COMBINATION SQUARE
Fowler High Precision 72-385-012
Your Price: $290.75
Displaying 1 to 36 (of 64 products)

Measurement Tools and Inspection

Measurement tools and inspection instruments are indispensable in any automotive mechanic’s toolbox, ensuring precision and accuracy during vehicle diagnostics, repairs, and assembly. These tools play a pivotal role in validating dimensions, tolerances, and alignments for various automotive components and systems. From verifying part clearances to ensuring proper alignment during installations, measurement tools provide the exactness required to meet industry standards and maintain safe, reliable vehicle performance. For professionals working across sectors like repair shops, manufacturing facilities, and performance tuning, these tools are essential for achieving optimal results. Within the measurement tools category, combination squares stand out for their versatility and efficiency in layout and alignment tasks. Tools such as the 12" English/Metric Combination Square feature durable, etched hard-chrome-plated blades that resist rust and precise-machined working surfaces that deliver exceptional measurement and layout accuracy. Equipped with an easy-to-read vial and a built-in scriber, these squares simplify tasks such as marking surfaces, verifying angles, or ensuring precise alignments for custom modifications. Additionally, their ergonomic, high-visibility die-cast handles, paired with brass hardware, offer durability and comfort during extended use. Applications for these tools range widely, supporting tasks in automotive bodywork, metal fabrication, and component installations, as well as crossover applications in HVAC and electrical systems. By streamlining measurement and inspection processes with tools like these, mechanics save time, reduce errors, and improve the overall quality of their work. Whether you're aligning mounting brackets or verifying machining tolerances, accurate inspection tools are a must-have for any professional automotive technician striving for excellence.