HHIP 4401-1812 18 x 12 x 3" Black Granite Surface Plate, Grade A, Ledge 0

HHIP 4401-1812 18 x 12 x 3" Black Granite Surface Plate, Grade A, Ledge 0

• The top surface of this plate is precision ground to achieve a high degree of flatness and the accuracy is +/-.000050". 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. Includes Certificate of Inspection that is NOT NIST TRACEABLE.