Square, straightedge, curved board

This series of platform measuring tools covers three main categories: straightedges, squares, and angle plates. It includes marble straightedges, marble right-angle squares, cast iron straightedges, cast iron right-angle squares, cast iron guards, cast iron angle plates, 90° guide plates, T-slot angle plates, and magnesium-aluminum straightedges, primarily used for measuring flatness, straightness, and perpendicularity, as well as workpiece positioning in machining and inspection. The marble series is characterized by high precision and stability, suitable for precision inspection environments; the cast iron series is rigid and durable, widely used for workshop marking, clamping, and routine inspection; and the magnesium-aluminum straightedges are lightweight and resistant to deformation, facilitating frequent on-site measurements. The overall product system balances accuracy and practicality, meeting the needs of various scenarios from precision metrology to heavy-duty machining.