Precision Granite Straight Edge: The Ultimate Reference for Ultra-Precision Metrology
Based on the product image, this straight edge exemplifies industrial elegance and functional rigor. Crafted from premium black granite, its surface exhibits a fine, uniform grain structure that speaks to its geological stability. The top working face is polished to a mirror-like finish, ensuring minimal friction during measurement and preventing scratches on delicate workpieces. A key design feature visible in the image is the array of precision-drilled and threaded holes along the side faces. These are not afterthoughts; they are integral to the component's versatility, allowing for secure mounting, alignment with other fixtures, or integration into larger automated inspection systems. The sharp, clean edges and perfect rectangular geometry demonstrate superior machining capabilities, ensuring that the reference edges themselves are free from defects that could compromise accuracy.
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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... |
- • Unmatched Material Integrity: We use only high-density black granite sourced from verified quarries. Unlike inferior marble substitutes that may warp over time, our material has undergone millions of years of natural aging, guaranteeing dimensional stability that lasts decades. This density also provides exceptional vibration absorption, critical for maintaining accuracy in dynamic factory environments.
- • Master Craftsmanship Meets Modern Tech: While we utilize advanced CNC machinery for initial shaping, the final precision is achieved by master craftsmen with over 30 years of hand-scraping and lapping experience. This hybrid approach ensures that every straight edge meets or exceeds international standards like DIN 876 and GGG-P-463C-78.
- • Versatile Integration: The pre-drilled and tapped holes allow this straight edge to function beyond simple manual inspection. It can be permanently mounted as a reference rail for linear encoders, used as a datum for CMM calibration, or integrated into custom fixture plates for wafer inspection equipment.
- • Transparency You Can Trust: True to our core value, every unit comes with a detailed inspection report tracing its accuracy back to national standards. There are no hidden compromises—what you see is exactly what you get.
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 |
... |
Q: How does your granite compare to cast iron or steel straight edges?
A: Granite is non-magnetic, corrosion-resistant, and has a much lower thermal expansion rate than metal. It also dampens vibrations far better, making it ideal for high-precision optical and electronic measurements where metal tools might introduce error.
Q: Can you customize the size and hole patterns?
A: Absolutely. We specialize in bespoke solutions. Whether you need a specific length, unique hole spacing for your fixture, or even embedded metal inserts for magnetic chucks, our engineering team can bring your design to life.
Q: What is the lead time for a standard vs. custom order?
A: Standard sizes are often available from stock or can be shipped within 2-3 weeks. Custom orders typically require 4-6 weeks depending on complexity, but we always prioritize transparency and will provide a precise timeline upon quotation.
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)
