E-46EMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.An inspection certicate is supplied as standard. Refer to page U-11 for details.• Natural granite is free from deterioration or dimensional change over time.• Granite surface plates have signicant advantages over cast iron surface plates:Twice as hard as cast iron. Non-magnetic. Low thermal expansion. • Free from wringing, so there is no interruption of work.• Free from burrs or protrusions because of the ne grain structure and insignicant stickiness; this ensures a high degree of atness over a long service life and causes no damage to workpieces or instruments.• Use these plates in a stable temperature environment. Since atness error occurs when there is a temperature difference between the working surface and the underside, avoid working in direct sunlight. Also, do not place a plate in the vicinity of an air conditioner, etc. (Recommended environment: Temperature 20±1 °C, Humidity 58±2 %)Black Granite Surface PlatesSERIES 517Grinding CMM granite tables on a large grinding machineCustom-made Granite ProductsMitutoyo can manufacture granite products to your design (such as main structural components of semiconductor instruments and process machinery). 1000×750 mm600×600 mmCast iron surface plateGranite surface plateMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.