Protractor Head for Combination Square

The PEC Tools Protractor Head is the analytical heart of your 4-piece combination set, designed for the precise measurement and transfer of any angle from 0° to 180°. While aluminum versions can shift under pressure, our heavy-duty cast iron construction provides the necessary mass and dampening to ensure your angle stays locked during high-stakes layout.

Why the PEC Protractor Head is a Shop Essential:

• Cast Iron Superiority: Built from premium cast iron, this head offers far greater wear resistance and structural stability than softer alloy alternatives.
• Precision-Ground Reference Surfaces: The base is ground perfectly flat, ensuring your angular measurements are always referenced against a true plane.
• Integrated Spirit Level: Features a high-visibility built-in bubble level, allowing you to check for plumb and level while simultaneously measuring or setting an angle.
• High-Contrast Degree Scale: The protractor features a clearly etched, easy-to-read scale for rapid and accurate setting to within a fraction of a degree.
• Industrial Locking Bolt: Equipped with a knurled locking nut that provides a non-slip grip on the hardened steel rule, preventing "creep" during complex transfers.