12 X 9 X 3" Granite Surface Plate Grade B Ledge 0

HHIP 12 X 9 X 3" Granite Surface Plate Grade B (Grade 1) Ledge 0 The top surface of this plate is precision ground to achieve a high degree of flatness and the accuracy is +/-.0001". 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. Shop grade is a practical and economical choice for everyday workshop tasks. This grade is well-suited for: General workshop use - Providing a reliable surface for various tasks. Assembly - Ensuring accurate alignment and fit of components. Production checking - Verifying dimensions and tolerances during manufacturing. Hobbyist projects - Providing a stable and accurate surface for DIY tasks. 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.