Combination squares for woodworking displayed in a neatly arranged layout.

Combination Squares

The Multi-Tool of Precision

The PEC Combination Square is the undisputed centerpiece of any professional machinist or woodworkerโ€™s tool chest. Since 1960, weโ€™ve manufactured these versatile instruments to serve as a square, depth gauge, height gauge, and levelโ€”all in one high-accuracy tool.

We donโ€™t cut corners on materials. Our heads are available in heavy-duty cast iron or hardened steel, paired with tempered steel blades that are precision-ground for a smooth, repeatable slide.

Sort by

Center Head for Combination Square with a blue finish and precision layout features. Center Head for Combination Square with heavy-duty cast iron construction for accurate center locating.
Center Head for Combination Square
From $46.00 -100% $0.00
From $46.00
Protractor head for combination square with level bubble and precision adjustment knobs Protractor head for combination square with a blue finish, measuring angles up to 180 degrees, made from heavy-duty materials.
Protractor Head for Combination Square
$93.00 -100% $0.00
$93.00
Square Head tool with blue finish, designed for precision in woodworking and metalworking tasks. Square Head tool with a blue cast iron finish and stainless steel edge for precision craftsmanship.
Square Head
From $45.00 -100% $0.00
From $45.00
2-Piece Combination Square Set | Machinist Blade & Square/Miter Head 2-Piece Combination Square Set | Machinist Blade & Square/Miter Head
2-Piece Combination Square Set | Machinist Blade & Square/Miter Head
From $79.06 -100% $0.00
From $79.06
Combination Square (3-Piece) showing machinist blade, center head, and square for precision measurement 4-piece combination square set showing a machinist center head on a blade for precise measurements.
3-Piece Combination Square Set | Machinist Blade, Square and Center Head
From $120.00 -100% $0.00
From $120.00
4-Piece Combination Square set including machinist square, protractor, and center head for precision measurements 4-piece combination square set showing a machinist center head on a blade for precise measurements.
4-Piece Combination Square Set | Machinist Square, Protractor, Center Head
From $215.00 -100% $0.00
From $215.00
Lock bolt part for 12"-24" combination square, heavy-duty replacement for accurate measurements.
Lock Bolt Part for 12"-24" Combination Square
$10.00 -100% $0.00
$10.00
black lock bolt for PEC Tools combination square
Lock Bolt Part for 4-6" Combination Square
$10.00 -100% $0.00
$10.00
Combination Square Wooden Box and Custom Engraving on Blade (100% off) - packaging Combination Square Wooden Box and Custom Engraving on Blade (100% off) - packaging
Wooden Storage Case for Combination Square Sets| For 4 Pc Square Sets
$60.00 -100% $0.00
$60.00
Aluminum combination square tool for precise measurements and layouts in construction and woodworking projects. aluminum combination square tool showcasing a durable design and measurement scale for precision layout work
Combination Square 2 Piece| Layout Tool
$20.99 -100% $0.00
$20.99