Height Gauge
SPT Metrology supplies high-precision Height Gauges designed for accurate vertical measurement, layout marking, and...
GRANITE TRI-SQUARE
High-Accuracy Reference for X-Y-Z Axis Inspection & Machine Alignment
Product Overview
As a trusted Granite Tri-Square Manufacturer, SPT Metrology manufactures high-precision Granite Tri-Squares engineered for accurate inspection of perpendicularity, squareness, and X-Y-Z axis alignment in machine tools, CMMs, and precision components. Designed for maximum rigidity and long-term dimensional stability, these triangular granite squares serve as essential reference tools for metrology labs, CNC machine calibration, machine tool builders, and quality-control environments. Crafted from high-density, naturally seasoned black granite, our tri-squares deliver superior accuracy, corrosion resistance, and vibration damping compared to steel or cast iron alternatives.
Each granite tri-square is meticulously lapped to extremely tight tolerances, ensuring precise perpendicularity between all reference faces. The two-face master angle includes two narrow, perfectly flat, and perpendicular edges, ideal for checking component squareness, spindle alignment, guideways, and vertical machine structures. For advanced inspection needs, our three-face granite tri-squares provide a reliable, economical solution for verifying the X, Y, and Z axes of CNC machining centers and coordinate measuring machines. This makes them indispensable for machine calibration, geometric accuracy verification, and routine maintenance checks.
Granite’s inherent properties—non-magnetic characteristics, excellent wear resistance, and minimal thermal expansion—ensure long-lasting accuracy even in fluctuating workshop environments. The rigid triangular design offers exceptional stability, preventing bending or deflection during use. This stability is especially critical for high-precision axis checking and alignment tasks where even micro-level deviations can impact machining accuracy.
SPT Metrology granite tri-squares are widely used for:
- Checking perpendicularity of machine guideways
- Aligning CNC machine X-Y-Z axes
- Verifying spindle and column squareness
- Inspecting tooling fixtures and precision assemblies
- Calibration of CMMs and machining centers
Each tri-square undergoes stringent inspection and is manufactured in accordance with international metrology standards to ensure absolute reliability and repeatability.
Choose SPT Metrology Granite Tri-Squares for unmatched accuracy, long-term stability, and superior performance in machine alignment and geometric inspection tasks—precision engineered for today’s advanced manufacturing needs.
ExploreOur Products
