Starrett Tru Stone Five-Face Granite Master Square, 36" Length, 36" Width

Key Features

• Precision CNC & CMM Calibration - Engineered for accurately checking X-Y-Z axes on CNC machine tools and coordinate measuring machines, ensuring your equipment maintains peak accuracy and performance.
• 90° Squareness Verification - Place the square in a horizontal position to instantly check X and Y axes for perfect 90° squareness, critical for consistent, repeatable machining results.
• Z-Axis Perpendicularity Check - In the vertical position, trace along the square's vertical edge to verify Z-axis perpendicularity, catching alignment errors before they impact your workpiece.
• Table Parallelism Inspection - Trace along the top edge while vertical to check table parallelism across X and Y axes simultaneously - a fast, reliable method for full table alignment verification.
• Multi-Purpose Precision Tool - Beyond CNC and CMM use, the five-face design makes it ideal for any application requiring accurate squareness or parallelism checks across industrial and inspection work.

Product Description