Mitutoyo Series 517 Black Granite Surface Plates (With or Without Stand) - Choice of Grade 0 or 1

SERIES 517 - Black Granite Surface Plates

Mitutoyo surface plate made from fine-grained black granite. This material has many advantages compared to cast iron in this application, such as being non-magnetic, rustless, twice as hard, non-burr-forming, and not prone to stickiness.

• Free from wringing, so there is no interruption of work.
• Natural granite is free from deterioration or dimensional change over time.
• Granite surface plates have significant advantages over cast iron surface plates: twice as hard as cast iron; non-magnetic; low thermal expansion.
• 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 workpieces or instruments.
• Use these plates in a stable temperature environment. Since flatness 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℃, humidity 58±2%.)

Technical Data

• Grade: Conforms to BS 817 1988