LLDSIMEX 6 Inch Length 6 Inch Width 2 Inch Thickness Granite Surface Plate, Grade B,No Ledge 6x6x2 Inch (6x6x2 Inch)

LLDSIMEX 6 Inch Length 6 Inch Width 2 Inch Thickness Granite Surface Plate, Grade B,No Ledge 6x6x2 Inch (6x6x2 Inch)

The top surface of this plate is precision ground to achieve a high degree of flatness and the accuracy is +/-0001". It is a Grade B (Grade 1) plate. They are also used as a work surface for assembling, inspecting, and marking parts. Non-magnetic and non-conductive. Granite surface plates meet or exceed Federal Specifications GGG-P-463C and it includes a certificate of inspection. (Note that these are not NIST traceable.) Granite plates are used for measuring the flatness and squareness of other objects, laying out parts, calibrating instruments, setting up tools, checking parallelism and perpendicularity, and measuring heights with the use of a height gage. 6 Inch Length 6 Inch Width 2 Inch Thickness，No Ledge For General Inspection Work Throughout The Shop