Large Granite Straightedge

Large Granite Straightedge

Engineered for Major Scale Precision

We specialize in the design and manufacture of large granite straightedges,engineered to provide unwavering reference standards for aligning,inspecting,and calibrating substantial industrial equipment and surface plates.These tools are built for stability and accuracy on a grand scale,where smaller references are insufficient.

Defining Characteristics of Large Straightedges

Scale&Capacity:Typically defined as lengths starting from 2000mm(2 meters)and extending to 6000mm(6 meters)or more,with proportional increases in height and width to ensure structural rigidity.

Critical Stiffness:Engineered with robust cross-sectional profiles—such as deep'I'-beam,box beam,or reinforced rectangular designs—to minimize deflection under their own weight and maintain geometric truth over the entire span.

Stability as a Priority:The inherent mass and damping characteristics of granite are strategically leveraged to counteract vibration and thermal effects that are amplified over large distances,ensuring consistent performance in industrial environments.

Manufacturing&Engineering Expertise

Producing a straightedge of this scale requires specialized capability:

Handling of Massive Granite Slabs:Utilizes custom equipment for safe movement and machining of multi-ton stone sections.

Controlled Environment Machining:Critical finishing and lapping are performed in temperature-stable conditions to prevent thermal distortion during the lengthy manufacturing process.

Multi-Point Support Strategy:Each straightedge is engineered and lapped to perform accurately when supported at specific,marked fulcrum points(following the Airy or Bessel point principle)to eliminate gravitational sag.

Precision Verification:Final inspection employs high-accuracy methods such as laser interferometry or electronic leveling systems capable of measuring flatness over long spans.