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Surface plates are made of various types of granite they are massive, stiff, and hard. The top work surface is lapped flat and smooth to provide a critical reference surface for many types of dimensional measurements. The quality of surface plates had been standardized for decades through the Federal Specification GGGP463c.
Granite Tables, Plates, Squares and Parallels Midland Metrologys Granite Surface Tables, Granite Surface Plates and Granite Squares are made from a very high quality dense black granite. All products are precision ground and lapped producing reliable, stable and long life granite products. Granite has a number of advantages for Surface Tables, Plates and Squares over the traditional cast
Starrett Precision Granite Surface Plates provide a reference plane for work inspection and for work layout. Their high degree of flatness, overall quality and workmanship also make them ideal bases for mounting sophisticated mechanical, electronic and optical gaging systems.
Precise Black Granite Surface Plates. The hardness and stability allow accuracies within millionths of an inch. Along with the high accuracies, granite is rustproof, nonmagnetic, abrasive resistant, non wedging, wrapresistant and easily cleaned.
#0183;#32;Marble (obviously not used for decent surface plates) CAN be persuaded to undergo plastic deformation under the pressure of a knife blade. See my photos in the storing straight edges thread for lumps of approximately granite composition which have undergone brittle failure and the gaps have been filled by marble flowing in (again at much higher temperatures and pressures than we''d like).
Inspection Surface Plates. Fortune Metrology Granite Surface Plates meet the DIN and IS Standards specified in the table above. Granite Surface Plates are manufactured to precision standards using the highest quality granite. ACCURACY Rigorous quality control inspection is carried out at all stages.
Surface plates are made from granite and offer a flat reference plane for QA, inspection, metrology, and setup applications. Granite surface plates are durable and rust and corrosionresistant and almost entirely nonmagnetic.
Shop online today for Granite Surface Plates amp; Stands. Different grades available depending on application (grade 1, 0 and 00). UK next day delivery!
Granite surfaces plates are key instruments in inspection labs across the country. The calibrated, extremely flat surface of a surface plate enables inspectors to use them as a baseline for part inspections and instrument calibration.
STANDRIDGE granite surface plates provide an accurate reference plane for work inspection and for work layout. Their high degree of flatness, overall quality and workmanship also make them ideal bases for mounting sophisticated mechanical,
36quot; Long x 24quot; Wide x 6quot; Thick, Granite Inspection Surface Plate A Inspection Grade, quot; Unilateral Tolerance, Includes NIST Traceability Certificate MSC# Starrett (80658)
The Early History of Granite Surface Plates. Before World War II, Manufacturers used Steel Surface Plates for the dimensional inspection of parts. During World War II the need for steel increased dramatically, and a lot of Steel Surface Plates were melted down.
Granite Surface Plates are manufactured using natural black granite stone, quarried from earth in its natural form. These precision granite surface plates are precision lapped to high standards of flatness to achieve accuracy and are used as bases for mounting sophisticated mechanical, electronic and optical gauging systems.
#0183;#32;In this video we see the process for inspection and reconditioning granite surface plates. The plates are inspected and calibrated with an Autocollimator and...
Starrett 80886 Crystal Pink Granite Surface Plate, Grade A Inspection, 2 Ledge, 30quot; x 48quot; Surface Size, 8quot; Thickness Fowler Full Warranty Granite Gage Stand, 8quot; Column Height, quot; Flatness, Fine Adjust
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