Granite Square (Four-Sided)
Designed for precise comparison and inspection of linearity and perpendicularity in precision components and parts. It is ideal for calibrating traditional or CNC machine tools, specialized machinery, measuring platforms, and the perpendicularity, parallelism, and straightness among the X-Y-Z axes of coordinate measuring machines.

Granite Cylinder Square
Suitable for accurate comparison and inspection of linearity and perpendicularity in precision components and parts. It is used to calibrate traditional or CNC machine tools, specialized machinery, measuring platforms, and the straightness and perpendicularity between the X and Y axes of coordinate measuring machines.

Granite Right Angle Square
Specifically designed for accurate comparison and inspection of linearity and perpendicularity in precision components and parts. It is ideal for calibrating traditional or CNC machine tools, specialized machinery, measuring platforms, and ensuring straightness and perpendicularity among the X-Y-Z axes of coordinate measuring machines.

Granite Straightedge
Perfect for precise comparison and inspection of linearity and perpendicularity in precision components and parts. It is used for ensuring straightness, flatness, and parallelism in machine tools, measuring instrument platforms, and equipment assembly.