Precision Granite Square
Designed for True 90° Precision
In precision engineering, perpendicularity error is cumulative. A deviation of just a few microns at the reference stage can magnify into serious assembly inaccuracies.
This precision granite square is manufactured to serve as a reliable 90-degree reference standard for inspection, calibration, and high-precision assembly environments. By combining natural granite stability with engineered light-weighting geometry, it provides the ideal balance between rigidity, handling convenience, and long-term dimensional reliability.
Professionals in metrology laboratories and advanced equipment manufacturing rely on granite reference tools because they remain stable where metal alternatives deform.
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Model |
Details |
Model |
Details |
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Size |
Custom |
Application |
CNC, Laser, CMM... |
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Condition |
New |
After-sales Service |
Online supports, Onsite supports |
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Origin |
Jinan City |
Material |
Black Granite |
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Color |
Black / Grade 1 |
Brand |
ZHHIMG |
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Precision |
0.001mm |
Weight |
≈3.05g/cm3 |
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Standard |
DIN/ GB/ JIS... |
Warranty |
1year |
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Packing |
Export Plywood CASE |
After Warranty Service |
Video technical support, Online support, Spare parts, Field mai |
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Payment |
T/T, L/C... |
Certificates |
Inspection Reports/ Quality Certificate |
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Keyword |
Granite Machine Base; Granite Mechanical Components; Granite Machine Parts; Precision Granite |
Certification |
CE, GS, ISO, SGS, TUV... |
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Delivery |
EXW; FOB; CIF; CFR; DDU; CPT... |
Drawings’ format |
CAD; STEP; PDF... |
■ Certified 90° Geometric Accuracy
Each working face is precision-lapped and inspected to ensure reliable perpendicularity standards.
■ Natural Dimensional Stability
Granite’s aged crystalline structure eliminates internal stress and prevents long-term deformation.
■ Lightweight Yet Rigid Design
Strategic through-holes reduce mass while preserving structural stiffness, improving usability in labs.
■ Superior Vibration Absorption
Granite dampens micro-vibrations, improving measurement repeatability and inspection consistency.
■ Corrosion-Free & Maintenance-Free
Unlike steel tools, granite never rusts and requires no anti-corrosion treatment.
■ Non-Magnetic & Electrically Insulating
Ideal for semiconductor, optical, and high-sensitivity electronic equipment environments.
■ Multi-Face Reference System
Four precision datum surfaces enable versatile measurement setups and comparative inspections.
We use various techniques during this process:
● Optical measurements with autocollimators
● Laser interferometers and laser trackers
● Electronic inclination levels (precision spirit levels)
1. Documents together with products: Inspection reports + Calibration reports(measuring devices) + Quality Certificate + Invoice + Packing List + Contract + Bill of Lading(or AWB).
2. Special Export Plywood Case: Export fumigation-free wooden box.
3. Delivery:
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Ship |
Qingdao port |
Shenzhen port |
TianJin port |
Shanghai port |
... |
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Train |
XiAn Station |
Zhengzhou Station |
Qingdao |
... |
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Air |
Qingdao Airport |
Beijing Airport |
Shanghai Airport |
Guangzhou |
... |
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Express |
DHL |
TNT |
Fedex |
UPS |
... |
Metrology Laboratories
Used as a master squareness standard for verifying angle deviation and geometric tolerances.
CMM Calibration
Serves as a stable reference artifact to validate probe perpendicularity and machine geometry.
Precision Equipment Assembly
Ensures orthogonal alignment of linear guides, stages, and structural frames.
Optical & Vision Inspection Systems
Non-reflective surface prevents stray light interference during camera calibration.
Aerospace & High-End Manufacturing
Supports strict GD&T compliance and precision verification workflows.
User Benefits
✔ Higher inspection credibility
✔ Reduced geometric tolerance stack-up
✔ Improved equipment assembly accuracy
✔ Long service life without deformation
✔ Lower recalibration frequency
QUALITY CONTROL
If you can’t measure something, you can’t understand it!
If you can’t understand it.you cant control it!
If you can’t control it, you can’t improve it!
More information please click here: ZHONGHUI QC
ZhongHui IM, your partner of metrology, help you succeed easily.
Our Certificates & Patents:
ISO 9001, ISO45001, ISO14001, CE, AAA Integrity Certificate， AAA-level enterprise credit certificate…
Certificates and Patents are an expression of a company’s strength. It’s society’s recognition of the company.
More certificates please click here: Innovation & Technologies – ZHONGHUI INTELLIGENT MANUFACTURING (JINAN) GROUP CO., LTD (zhhimg.com)
