granite tri square
1. Verticality compensation calibration
2. CMM volumetric accuracy correction
3. Straightness extension measurement of precision linear guide rails
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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 Tri Square Ruler; Granite Measuring; 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... |
1. Precision stability: Natural granite — billion-year aged, stress-free, ultra-low thermal expansion (≤0.6×10⁻⁶/℃). No measurable deformation in lab temperature fluctuations; maintains reference-grade accuracy over time.
2. Surface accuracy: Precision-ground to 00-grade — perpendicularity ≤2 μm, flatness negligible. Minimizes error propagation when used as a reference.
3. EMI immunity: Non-conductive and non-magnetic. Unaffected by lab magnetic fields; no iron filings attraction — ensures clean, reliable comparisons.
4. Durability & maintenance: Mohs 7–8 hardness — outperforms steel in wear resistance. No rust, no corrosion. Clean with alcohol only — low upkeep for high-frequency lab use.
5. Versatility: Works with dial indicators, test indicators, and more to verify workpiece perpendicularity and flatness — or calibrate other gauges. A core tool for metrology labs.
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 |
... |
1. We will offer technical supports for assembly, adjustment, maintain.
2. Offering the manufacturing &inspection videos from selecting material to delivery, and customers can control and know every detail at anytime anywhere.
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)
