Cosmetics: We have cleaned the Top and the Surface is smooth and perfect, no nicks, holes nor missing parts. There are a few side edges with minor imperfections and the side of the granite has two small parts missing as shown in the pictures with the measuring tape so buyer can see they do not affect operation whatsoever.
THESE 4-LEDGE UNITS SELL ONLINE FOR OVER US$ 2,316,00 WITHOUT THE STEEL BASE PLUS SHIPPING COST AS CAN BE SEEN BY COPYING AND THEN GOOGLING THE FOLLOWING LINK: precisiongraniteusa.com/images/PGCATALOGPRICELIST.pdf
Manufacturer's Technical Data Information taken from Manufacturer's Website can be found by COPYING and then GOOGLING the following link: standridgegranite.com
STAND RIDGE PRECISION GRANITE® SURFACE PLATES are manufactured to meet or exceed the tolerances specified by ASME B89.3.7-2013 and Federal Specification GGG-P-463c.
A PRECISION GRANITE® Calibration Certificate is included for this surface plate guaranteeing overall surface flatness and repeat gage measurements, and is traceable to N.I.S.T. or equivalent National or International Organization, complies with, ANSI/NCSL Z540-1and ISO 10012 in accordance with our ISO 9001 certified quality system.
STAND RIDGE GRANITE is an accredited provider of 17025 Calibration Services.
STAND RIDGE PRECISION GRANITE® plates are made of extremely stable granite.
The granite properties determine the stiffness of the granite so accuracies can be guaranteed.
Optical Top
Scientific Grade
48" wide x 36" deep x 6" Thick (200 mm) / (4' x 3' Feet)
Research Grade CleanTop® provides the ultimate in optical top performance.
Unmatched in the industry, Research Grade performance combines the highest core density with the unique CleanTop® design, and the highest level of structural stability commercially available.
Research Grade CleanTops are recommended for the most demanding applications including interferometers, holography, and ultra-fast lasers, as well as the most severe floor vibration environments.
Features
• Maximum Structural Research Grade
Specifications
Rounded Bevelled Corners
CleanTop® Tops include user-friendly radiused rounded corners as a standard feature.
