Basic Info.
Model NO.
200*200-4000*8000mm
Type
Inspection Surface Plate
Material
Granite
Measurement Object
Length
Range
0~500mm
Resolution
0.01mm
Precision
0.01mm
Measure Method
Manual
Accuracy
A
Precision Measuring Device
Precision Measuring Device
Certification
ISO
Customized
Customized
Accessory
Stand
Usage
Inspection
Shipping
Sea
Color
Black
Transport Package
Wooden Package
Specification
Can be customized
Trademark
huawei
Origin
China
Production Capacity
100 Piece/Month
Product Description
2024 new granite square master inspection ruler


Granite leveling rulers are also known as granite straight ruler,granite leveling rulers
are manufactured according to International standard to ensure the high quality.The
products are always made into ribbed plate or box-type, our company use the scraping
process to improve the precision of the products. Since the products are customized,
so the customers can customize the size according to the actual needs.
Therefore, precision black granite leveling ruler export to foreign countries
is popular in all the world.

Advantages
A. The granite is after a long-term natural aging, the organizational structure is uniform,
the expansion coefficient is small, the internal stress completely disappeared, as a result
of which the precision is very high.
B. Good rigidity, high hardness, strong wear resistance.
C. Not afraid of acid and alkali corrosion, will not rust; do not need oiling, easy to maintain,
long service life.
D. Will not scratch, will not limited by the constant temperature conditions, and can maintain
the measurement precision at room temperature.
E. Will not be magnetized, and can move smoothly while measuring, no tight feeling, free of
the affect of moisture, good flatness.

Granite leveling ruler has the following characteristics:







are manufactured according to International standard to ensure the high quality.The
products are always made into ribbed plate or box-type, our company use the scraping
process to improve the precision of the products. Since the products are customized,
so the customers can customize the size according to the actual needs.
Therefore, precision black granite leveling ruler export to foreign countries
is popular in all the world.
The Specification | |
Name | precision black granite leveling ruler export to foreign countries |
Material | Jinan Green Granite |
Proportion | 2970-3070 Kg/m² |
Compressive Strength | 245-254 Kg/m² |
Modulus of Elasticity | 1.27-1.47N/mm² |
Linear Expansion Coefficient | 4.6×10-6/ºC |
Water Absorption | 0.13% |
The Hardness | HS70 |
Usage | A. As a precision reference measurement tool B. Measure the flatness, straightness of machine table, rail and precision plate |
Package | Wooden Box |
Specification(mm) | Line or flatness of working surface | Parallel between working surfaces | Verticality bwteen side and working surface | |||
Precision grade( μm) | ||||||
0 | 0 | 0 | 0 | 0 | 0 | |
500*100*40 | 1.6 | 2.6 | 2.4 | 3.9 | 8 | 13 |
700*100*40 | 2.1 | 3.5 | 3.2 | 5.3 | 11 | 16 |
1000*120*40 | 3 | 5 | 4.5 | 7.5 | 15 | 25 |
1000*120*60 | 3.2 | 5.3 | 4.9 | 7.9 | 15.6 | 25.8 |
1200*120*60 | 3.69 | 6.2 | 5.4 | 8.5 | 16.4 | 26.5 |
1500*150*60 | 4.2 | 7.2 | 6.5 | 11 | 21.5 | 36.2 |
1600*150*80 | 4.4 | 7.4 | 6.6 | 11.1 | 22 | 37 |
2000*200*80 | 5.4 | 10 | 8.1 | 13.5 | 27 | 45 |
2500*200*80 | 6 | 14.3 | 10.2 | 13.8 | 35 | 69.6 |
3000*200*100 | 8 | 16 | 12 | 14 | 42 | 81.2 |


A. The granite is after a long-term natural aging, the organizational structure is uniform,
the expansion coefficient is small, the internal stress completely disappeared, as a result
of which the precision is very high.
B. Good rigidity, high hardness, strong wear resistance.
C. Not afraid of acid and alkali corrosion, will not rust; do not need oiling, easy to maintain,
long service life.
D. Will not scratch, will not limited by the constant temperature conditions, and can maintain
the measurement precision at room temperature.
E. Will not be magnetized, and can move smoothly while measuring, no tight feeling, free of
the affect of moisture, good flatness.


1. | High quality with competitive prices |
2. | Rust-proof technology has obtained a patent |
3. | Factory with more than 40 years' experience |
4. | Professional design and strong production capacity |




