1200 x 800 x 150 mm Black More Stable Granite Surface Plate

• Granite Surface Plates meet or exceed Federal Specification GGG-P-463c. Each Surface Plate is shipped with a Certificate of Accuracy which guarantees its accuracy and verifies its traceability to the National Institute of Standards and Technology.
• All plates from 48"x108" and larger are Machine Base Gray Granite. Smaller plates are Black Granite.
• Surface Plates, to size of specifications other than standard, available on special order.
• Surface Plates, with the bolt screws, available on special order.

       granite surface plate's The standard sizes, absolute flatness tolerances (in thousandths of mm) and reference codes are present in the table on the catalogue. We can supply as per the needs of the customer, glued threaded inserts, as per drawing with holes, clearing grooves, T-slots and with rubber feet for smaller sizes.

Our granite surface plate refers to the advanced standards of the leading countries, and its flatness tolerance is in accordance with the JB/T 7975-1999 Surface Plate:

Grade 000 =1x(1+d/1000)/μm

Grade 00 =2x(1+d/1000)/μm

Grade 0 =4x(1+d/1000)/μm

Grade 1 =8x(1+d/1000)/μm

(d is the length of the diagonal)