Granite Measuring
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Precision Granite Straight Edge
Ultra-Stable Reference Tool for High-Accuracy Alignment & Metrology
The ZHHIMG® Precision Granite Straight Edge is a high-accuracy metrology reference tool designed for precision alignment, straightness inspection, and equipment assembly. Manufactured from proprietary ZHHIMG® high-density black granite, it delivers exceptional dimensional stability, long-term accuracy, and vibration damping that cannot be achieved with metal or marble alternatives.
Engineered for professional metrology environments, this granite straight edge is widely used in machine tool calibration, linear guide installation, CMM alignment, and precision equipment assembly, where micron-level accuracy is critical.
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precision surface plate
Granite surface plates—commonly but inaccurately referred to as “marble platforms”—serve as primary precision reference standards in metrology, widely employed in precision engineering, instrumentation, electronics manufacturing, and scientific research laboratories. Fabricated from naturally aged, geologically stable granite with low thermal expansion and high dimensional stability, these plates undergo rigorous multi-stage lapping and calibration processes to achieve stringent flatness tolerances (typically ≤0.5 μm per 100 mm), ensuring long-term metrological reliability and traceable measurement accuracy.
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Granite Square Ruler
The granite square—also referred to as a granite reference square or rock square—is a high-precision geometric metrology instrument fabricated from naturally occurring, dimensionally stable granite. It serves as a primary reference standard for verifying perpendicularity, parallelism, and flatness of mechanical components and assemblies, and is widely employed in precision manufacturing, metrology laboratories, and quality assurance processes within industries such as aerospace, optics, and semiconductor equipment fabrication.
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granite dial base
A granite surface plate is a precision measuring aid crafted from natural granite, widely used in machining, quality inspection, and laboratory settings.
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Grade 00 / Grade 000 Granite Square
ZHHIMG granite squares are benchmark right-angle datum tools in the field of precision metrology, specially designed for ultra-precision machining and integrated circuit equipment inspection in 2026. They are mainly used to verify the perpendicularity and right-angle accuracy of components, precision structures and machine tool guideways.
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Precision Granite V-Blocks
The laboratory-grade granite V-blocks manufactured by ZHHIMG have achieved full-chain optimization in material, craftsmanship, precision and stability. They solve the three core problems in precision measurement, namely datum drift, environmental interference and wear deformation, and have become an irreplaceable datum tool in the fields of high-end manufacturing and scientific research, providing reliable guarantee for the quality control of key components.
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The Precision Tool for Geometric Tolerance Inspection
Granite parallels are high-precision measuring tools made of natural granite, which are widely used in industrial production, precision machining and laboratory measurement fields.
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CNC GRANITE BASE
A granite surface plate is a workbench or datum plane made of natural granite with an extremely flat surface. It is mainly used as a reference plane for precision measurement, providing a stable and accurate reference origin for various measuring tools (such as height gauges, micrometers, coordinate measuring machines (CMMs), etc.). In the CNC (Computer Numerical Control) machine tool and precision machinery industries, it is also often used as a core component for machine tool bases, guide rails or worktables.
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Granite Base for High-End CNC & CMM Machine Alignment
The granite surface plates of ZHHIMG are high-precision measurement reference platforms specially designed for ultra-precision industrial applications. Manufactured from premium black granite, they boast outstanding physical properties and extremely high accuracy.
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Granite Square Ruler: Uncompromising Quality.
Tired of the “fragility” of metal measuring tools while striving for precise measurements? The granite square ruler is the ultimate warrior in the field of metrology.
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Define 90°: Granite Triangles, The Cornerstone of Industrial Measurement
In the modern industrial field that pursues extreme precision, ZHHIMG granite triangles are indispensable core measuring tools. They are not just simple right-angle tools, but also benchmark instruments that guarantee product quality and process standards.
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Precision Core: The Art of Calibrating High-Precision V-Blocks
In the world of precision measurement, stability is everything. ZHHIMG adopts high-density (3100kg/m³) natural black granite with a Mohs hardness rating of 6–7, completely eliminating the troubles of rusting and magnetization. Every pair of V-blocks undergoes rigorous matched lapping, ensuring that the parallelism between the 90° included angle and the reference surface reaches the micron-level limit. It is the most reliable reassuring choice for your laboratories and workshops.