Black Granite Surface Plate

Series 517

• Natural granite seasoned for thousands of years is free from deterioration or dimensional change over time.
• Granite surface plate has many advantages over cast iron surface plates:
• Twice as hard as cast iron
• Minimal changes in dimension due to temperature changes.
• Free from wringing, so there is no interruption of work
• Free from burrs or protrusions because of the fine grain structure and insignificant stickiness; this ensures a high degree of flatness over a long service life and causes no damage to other parts or instruments.
• Trouble-free operation for use with magnetic materials
• Long life and rust-free, resulting in low maintenance costs.
• MITUTOYO Granite Surface Plates meet or exceed Federal Specification GGG-P-463c. Each Surface Plate is shipped with a Certificate of Accuracy which guarantees its accuracy and verifies its traceability to the National Institute of Standards and Technology.
• All plates from 48" x 108" and larger are Machine Base Gray Granite.  Smaller plates are Black Granite.
• Surface Plates, to size of specifications other than standard, available on special order.
• All MITUTOYO Surface Plates shipped F.O.B. Escondido, California.