Precision Granite Straight Edge – Grade 000 4000×200×100mm for Ultra-Precision Metrology
- • Thermal Stability You Can Trust: Granite’s low coefficient of thermal expansion means minimal distortion even in fluctuating workshop environments. Ideal for labs and production floors where temperature control isn’t perfect.
- • Hand-Scraped to Nanometer Flatness: Each edge is meticulously finished by master craftsmen using traditional scraping techniques — a process no CNC machine can replicate. Result? True linear accuracy that meets or exceeds ISO 8512-2 Grade AAA standards.
- • Zero Magnetic, Zero Corrosion, Zero Maintenance: Unlike steel or aluminum, granite won’t rust, warp, or react to coolants. Clean with a lint-free cloth and store in its protective case — it’s ready for use anytime.
- • Certified Traceability: Every unit ships with a serialized certificate of conformity (Serial: P04AK-01 as shown), including flatness deviation data and material origin documentation — critical for audit-ready quality systems.
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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... |
Imagine calibrating a 5-axis CMM probe system — a 0.002mm error in your reference straight edge could cascade into costly rework or scrapped batches. Or aligning a laser interferometer for wafer stepper optics — where even micron-level deviation compromises yield. This straight edge isn’t just a tool; it’s your quality assurance backbone. Users report:
“After switching from our old marble straight edge, our CMM repeatability improved by 37%. The granite doesn’t ‘breathe’ with humidity changes like marble does.”
— Senior Metrologist, Automotive Tier-1 Supplier
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: Can this be customized to different lengths or tolerances?
A: Yes. We offer custom sizing from 300mm to 6000mm and can meet Grade 00 or 000 requirements upon request. Lead time varies based on complexity.
Q: How do I verify its accuracy after delivery?
A: Each unit includes a test report with measured deviation values along the working edge. For ongoing validation, we recommend annual recalibration against a national standard.
Q: Is packaging included for safe shipping?
A: Absolutely. All units ship in reinforced wooden crates with foam inserts and moisture barriers to prevent damage during transit.
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)
