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 woodworker’s tool chest. Since 1960, we’ve manufactured these versatile instruments to serve as a square, depth gauge, height gauge, and level—all in one high-accuracy tool.

We don’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 Square Head
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.
Combination Square (3-Piece) | 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.
Combination Square(4 piece)| 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
Wooden storage case for combination square sets with tools neatly organized inside. Wooden storage case for combination square sets with brass hinges and embossed logo on the top surface.
Wooden Storage Case for Combination Square Sets| For 4 Pc Square Sets
$30.00 -100% $0.00
$30.00
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