High Precision Granite Square

High Precision Granite Square

The Ultimate Reference for Absolute Perpendicularity

Instrument Definition:The Pinnacle of Angular Metrology

A High Precision Granite Square represents the apex of geometric reference technology—a master-grade instrument engineered to establish,verify,and maintain perfect 90-degree relationships with uncertainty measured in fractions of an arc-second.Unlike standard inspection squares,these instruments are manufactured as certified metrological artifacts for national standards laboratories,primary calibration facilities,and industries where angular accuracy directly impacts product performance,safety,and regulatory compliance.

Material Selection&Scientific Foundation

Ultra-Premium Granite Selection

Quarry Source:Exclusive blocks from geologically stable formations with documented century-long dimensional stability

Density Requirements:Minimum 3.00 g/cm³,typically 3.02-3.08 g/cm³for optimal vibration damping

Crystalline Structure:Ultra-fine grain(<0.5mm crystal size)with isotropic properties verified through ultrasonic tomography

Thermal Characteristics:Certified thermal expansion coefficient 5.0-5.5×10⁻⁶/°C with documented isotropy

Material Certification Protocol

Spectroscopic Analysis:Verifying mineral composition and homogeneity

Ultrasonic Mapping:Identifying internal flaws or discontinuities at micron scale

Thermal Cycling Test:30-cycle test between 15°C-25°C to verify dimensional stability

Long-Term Creep Study:90-day monitoring under load to confirm absence of plastic deformation