Combination Squares

PEC 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.

Engineered for those who demand "shop-hardened" reliability, our combination squares are built to maintain their 90° and 45° integrity through years of heavy industrial use.

Industrial-Grade Construction

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.

Why the PEC Combination Square is the Shop Standard:

• 4-in-1 Versatility: Instantly switch between checking squareness, layout work, miter measurements, and leveling with the integrated spirit level.
• High-Contrast Graduations: Precision-etched scales in 4R, 16R, or Metric/EM provide crystal-clear readability that won't wear off over time.
• Reversible Blades: Available in multiple lengths (from 4" to 24") to fit the scale of your specific project.
• Protractor & Center Heads: Expand your capabilities with optional attachments for finding centers on round stock or measuring complex angles.