48 X 36 X 6 Grade A Granite Surface Plate

HHIP 48 x 36 x 6 Grade A Ledge 0 Granite Surface Plate The top surface of this plate is precision ground to achieve a high degree of flatness and the accuracy is +/-.0002". Granite surface plates provide an unmatched level of flatness for accurate measurement, inspection, and assembly across various applications. Meets Federal Specifications GGG-P-463C. Inspected for accuracy using an autocollimator. Granite has many advantages. Incredibly Flat - Precision ground for accuracy. Durable and Stable - Harder than steel, non-magnetic, and resistant to wear. Versatile - Ideal for Machinists and Engineers for measuring, inspecting, and calibrating tools. Quality Control - Ensuring accuracy in manufacturing processes. DIY Enthusiast - Woodworking, metalworking, jewelry making, leather crafting, and more. Tool Room Grade (A/00) has the highest standard for flatness. This is perfect for the most demanding applications where precision is paramount, such as: High-precision inspection: Ensuring the accuracy of critical components and tools. Gage calibration - Verifying the accuracy of measuring instruments. Quality control - Maintaining strict quality standards in manufacturing processes. Granite surface plates provide an unmatched level of flatness for accurate measurement, inspection, and assembly across various applications. Includes Certificate of Inspection that is NOT NIST TRACEABLE.