A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. The surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat. Surface plates are a common tool in the manufacturing industry and are often fitted with mounting points such it forms an integrated structural element of a machine such as a coordinate-measuring machine, precision optical assembly, or other high precision scientific & industrial machine. Plates are typically square or rectangular, although they may be cut to any shape or have mounting points such as nuts permanently attached to mount devices to the plate.
Granite is one of the best materials available today to meet the ever changing and sophisticated applications demanding coplanarity, perpendicularity, parallelism, flatness, and straightness. It is often chosen for its stability and high accuracies. With the Granite Surface Plates that we offer, you can depend on excellent quality, high accuracies, and quick delivery.