Marble ruler

Marble rulers are mainly used for measuring the flatness and straightness of machine tool workbenches,guide rails,and working surfaces.The inspection of instruments,tools,and mechanical workpieces is an ideal reference plane,and marble rulers are particularly used in measurement.

Basic features of marble rulers:

1.Physical characteristics:Specific gravity:2970-3070kg/㎡,compressive strength:245-254N/m㎡,strong abrasion resistance:1.27-1.47N/m㎡,linear expansion coefficient:4.6×10-6℃,water absorption rate:0.13%,Shore strength:HS70 or above.

2.Marble,after long-term aging,has a uniform structure and texture,low expansion factor,and no internal stress or deformation.

3.Good rigidity,with particularly strong coefficients,resulting in excellent accuracy retention.

4.Not affected by temperature,good flatness retention,and no need to worry about appearance deformation and accuracy changes due to temperature changes.

5.The marble ruler will not have scratches or magnetic reactions,and can move smoothly back and forth during testing without any stagnation or inflexibility.

6.Not afraid of acid or alkaline erosion,not prone to rusting,and easy to maintain and maintain,with a long service life.

7.Each marble ruler comes with a weight reduction hole for easy access during use.

Characteristics and advantages of marble rulers:

1.Not afraid of acid and alkali erosion,not prone to rust,does not require oil,is not prone to sticking fine dust,maintenance is convenient and simple,and has a long service life.

2.Good rigidity,strong.

3.There will be no scratches,not hindered by constant temperature conditions,and the temperature measurement accuracy can be maintained at room temperature.

4.Non magnetized,able to move smoothly during measurement,without any stagnation,unaffected by moisture,and with good flatness.

The material of the marble ruler is Jinan blue,with a black luster,structure,uniform texture,good stability,and high strength,.It is a benchmark measurement tool made of stone materials,which is an ideal reference plane for the inspection of instruments,tools,and mechanical components,especially for measurement purposes.