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Pink Vs Black Granite Surface Plate. Longer a surface plate holds its accuracy, the less often it will require resurfacing, ultimately providing better value. Accurate for use in metrology laboratories and wear resistant for use in abrasive shop environments.
Starrett Grade B Toolroom Pink Granite Surface Plate 18" x from www.ebay.com
Lab grade aa plates are considerably thicker than lesser grade surface plates in order to have less deflection which is per the standards for surface plates. In general, the color of granite is determined by the presence or absence of minerals which may have no bearing on the qualities that make good surface plate material. Whether for general inspection work or for working throughout the shop, our stock of crystal pink granite surface plates have a great surface hardness and wear resistance with the highest percent of quartz crystals of any granite plate.
Starrett Grade B Toolroom Pink Granite Surface Plate 18" x
Torn and ripped packaging specifications: Black granite, also known as diabase, is prized for its capability to bear heavy loads. Flatness of surface plates is within microns ( 0. The pink granite has a higher quartz content and that makes it wear longer.
