Granite Square Ruler
1,Brand name: "GOLD STONE"
2,Material:Ji Nan Black
3.inspection on verticality and parallelism as well
Port: Shanghai, Shenzhen, Qingdao, Hong Kong, Ningbo, Hong Kong, Guangzhou, Hong Kong, Tianjin, Xiamen, Dalian, Lianyungang port
Minimum Order Quantity: 1 Piece/Pieces
Supply Ability: 300 Piece/Pieces per Month
Payment Terms: L/C,T/T
Contact Supplier
Packaging Detail: The form of professional packaging:Purification Kit (plywood) with packaging,outside the protective plywood.
Delivery Detail: One week-One month
Granite Square Ruler
Our granite measuring devices and granite mechanical components are made of high qualityJinan Blackgranite.Due to their high precision,long duration,good stability and corrosion resistance,they have been more and more used in product inspection of modern industy and such scientific areas as mechanicalaerospace and scientific researches.
I,Physical Property ofJi Nan BlackGranite:
| Phisical Property | Reference Value |
| Specific Gravity | 2970-3070kg/m3 |
| Compressive Strength | 245-254Mpa |
| Elastic Modulus | 30-50Gpa |
| Linear Expansion Coefficient | 4.61x10-6/0C |
| Water Absorptivity | ≤0.07 |
| Shore Hardness | Above 70Hs |
II,The "GOLD STONE"brand of granite measuring tools have the following characteristics:
1 High precision reliable stability resistant to deform and guaranteed accuracy under normal ambient temperature.
2 No-rust and anticorrosion.
3 Wear resistance long service life.
4 Any cutting or scraching for working surface does not bring about roughedgeswhich might influence its measuring precision.
5 Non magnetization.
6 Glossy surface without sluggishness when the workpieces or tools are moving on it.
III,The accuacy we can follow :
TYPE(mm) | Squareness between abjacent measuring surfaces | Straightness of measuring surface | Parallelism between opposite measuring surface | |||
Precision grade(μm) | ||||||
| 00 | 0 | 00 | 0 | 00 | 0 | |
| 160x160 | 2 | 4 | 0.8 | 1.7 | 2 | 4 |
| 200x200 | 2 | 4 | 0.9 | 1.8 | 2 | 4 |
| 250x250 | 2.2 | 4.5 | 1 | 2 | 2.2 | 4.5 |
| 315x315 | 2.6 | 5.2 | 1.1 | 2.3 | 2.6 | 5.5 |
| 400x400 | 3 | 6 | 1.3 | 2.6 | 3 | 6 |
| 500x500 | 3.5 | 7 | 1.5 | 3 | 3.5 | 7 |
On inspection of verticality and parallelism as well as absolure 90 time measuring.
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Features: 1,One coating thickness gauge
2,Measure accurately
3,Memory storage
4,With standard bluetooth
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*High carbon steel,hardened.full polished.
*brass sheet,steel wires,90mm long
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