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Phone
13832708800
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Address
No.3 Huaxi Industrial Zone, Cangzhou City, Hebei Province
Product Categories
Cangzhou Sanfeng Standard Measuring Tools Co., Ltd
Granite (marble) ruler
NegotiableUpdate on 02/01
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Overview
Granite ruler (marble ruler) is used to measure the straightness and flatness of workpieces and equipment installation. A rock level ruler is a precision reference measuring tool made of stone material, which is an ideal reference surface for inspecting instruments, precision tools, and mechanical parts. Granite (marble) level rulers are especially used for high-precision measurements.
Product Details
Straight Rulrs Precision（Marble ruler）It is used for measuring the straightness and flatness of workpieces and equipment installation.
Straight Rulrs PrecisionPurpose: Flatness and straightness of machine tool worktable, guide rail, and precision work. The material of the granite ruler is Jinan blue, with a black luster. The structure is precise, the texture is uniform, the stability is good, the strength is high, and the hardness is high.
Granite ruler is a precision reference measuring tool made of high-quality stone material, which is an ideal reference surface for the inspection of instruments, precision tools, and mechanical parts, especially for high-precision measurement.
A granite ruler, even if a rock tool is hit by heavy objects during use, can only drop a few pieces of gravel at most. Granite rulers are superior to precision measuring reference parts made of cast iron and steel, and can achieve high and stable accuracy. The granite ruler produced by our company can maintain its original accuracy even after being stored for one year.
Characteristics and advantages of granite ruler:
1. After long-term aging, the rock has a uniform organizational structure, a small coefficient of expansion, complete disappearance of internal stress, and no deformation, resulting in high accuracy.
2. Good rigidity, high hardness, and strong wear resistance.
3. Not afraid of acid and alkali erosion, will not rust, does not need to be oiled, is not easy to stick to dust, easy to maintain, and has a long service life.
4. No scratches, not hindered by constant temperature conditions, and able to maintain temperature measurement accuracy at room temperature.
5. Non magnetized, able to move smoothly during measurement, without any sluggishness, unaffected by moisture, and with good flatness.
Straight Rulrs PrecisionPurpose: Flatness and straightness of machine tool worktable, guide rail, and precision work. The material of the granite ruler is Jinan blue, with a black luster. The structure is precise, the texture is uniform, the stability is good, the strength is high, and the hardness is high.
Granite ruler is a precision reference measuring tool made of high-quality stone material, which is an ideal reference surface for the inspection of instruments, precision tools, and mechanical parts, especially for high-precision measurement.
A granite ruler, even if a rock tool is hit by heavy objects during use, can only drop a few pieces of gravel at most. Granite rulers are superior to precision measuring reference parts made of cast iron and steel, and can achieve high and stable accuracy. The granite ruler produced by our company can maintain its original accuracy even after being stored for one year.
Characteristics and advantages of granite ruler:
1. After long-term aging, the rock has a uniform organizational structure, a small coefficient of expansion, complete disappearance of internal stress, and no deformation, resulting in high accuracy.
2. Good rigidity, high hardness, and strong wear resistance.
3. Not afraid of acid and alkali erosion, will not rust, does not need to be oiled, is not easy to stick to dust, easy to maintain, and has a long service life.
4. No scratches, not hindered by constant temperature conditions, and able to maintain temperature measurement accuracy at room temperature.
5. Non magnetized, able to move smoothly during measurement, without any sluggishness, unaffected by moisture, and with good flatness.
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Granite ruler specification (mm)
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Straightness or flatness of the working surface
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Parallelism between working faces
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Accuracy level μ m
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00
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0
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00
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0
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500×100×40
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1.6
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2.6
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2.4
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3.9
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750×100×40
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2.1
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3.5
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3.2
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5.3
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1000×120×40
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3.0
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5.0
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4.5
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7.5
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1500×150×60
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4.4
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7.4
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6.6
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11.1
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2000×200×80
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5.4
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10.0
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8.1
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13.5
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3000×200×80
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8
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16
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12
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24
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