Products & Solutions
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Granite Straight Edge
The granite straight edge is a high-precision metrological instrument widely employed in mechanical manufacturing, precision instrumentation, and metrology laboratories to verify the straightness of workpieces and machine tool guideways.
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Ultra-Precision Black Granite Machine Bases & Bridges
In the pursuit of nanometer-level accuracy, the foundation of your machine is its most critical component. ZHHIMG® (Zhonghui Group) specializes in engineering custom Precision Granite Assemblies, including the bridges and bases shown above, which serve as the indispensable “heart” of high-end semiconductor and metrology systems.
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Precision Granite Dial Base
The granite dial base is a dedicated reference platform for precision measurement. It is used in conjunction with dial indicators / micrometers and electronic probes to provide a stable measurement reference for dimensional inspection. It is widely applied in mechanical manufacturing, mold processing, metrology and inspection, and other scenarios.
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Precision Granite Straight Edge
Metrology-Grade Reference Tool for Straightness & Alignment Inspection
The ZHHIMG® Precision Granite Straight Edge is a high-accuracy metrology instrument designed for straightness inspection, precision alignment, and equipment calibration. Manufactured from proprietary ZHHIMG® high-density black granite, it provides exceptional dimensional stability, wear resistance, and long-term accuracy, making it an essential reference tool in precision engineering and metrology laboratories.
This granite straight edge is widely used wherever micron-level straightness control is required, including machine installation, guideway inspection, and high-precision assembly processes.
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Precision Granite V Blocks
Granite V-blocks—commonly referred to as marble V-blocks—are precision metrology fixtures widely employed in mechanical manufacturing and dimensional metrology. Their primary function is to provide stable, repeatable, and geometrically accurate support for cylindrical workpieces during inspection, layout marking, and datum establishment.
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Custom Precision Granite Assemblies: The Ultimate Foundation for Ultra-Precision Engineering
At ZHHIMG®, we redefine the standards of stability. Our precision granite components and assemblies are engineered for industries where “close enough” is never enough. Utilizing our proprietary ZHHIMG® Black Granite, we provide the world’s leading semiconductor, metrology, and aerospace companies with the physical foundation required for sub-micron accuracy.
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Precision Granite Tri Square Ruler
Granite triangular square (also known as marble triangular square or granite square gauge) is a high-precision geometric measuring tool made of natural stone. It is mainly used to inspect the perpendicularity and straightness of workpieces, as well as the installation and commissioning of equipment.
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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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precision granite
In the world of ultra-precision machining, the foundation is everything. ZHHIMG® provides the “bedrock” for the world’s most sophisticated technology through our custom-engineered Precision Granite Components. Leveraging our unique high-density black granite, we manufacture structural bases and components that outperform traditional materials in stability, vibration damping, and longevity.
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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.