Granite square ruler

The characteristics of granite square ruler:The granite square ruler is made of"Jinan green"stone material through mechanical processing and manual precision grinding.

Granite ruler accuracy:Granite rulers are divided into three levels:level 0,level 00,and level 000.Granite stone ruler is used in industries such as equipment installation,commissioning,construction,and decoration.The working face should use grinding technology.

Marble square ruler is used for detecting verticality and parallelism,and can also serve as a 90°measurement benchmark.

Marble square ruler scale:manufactured according to the mechanical industry scale:JB/T10027-99.

The mechanical function of granite square ruler:Granite rock ruler is not easy to deform,rust,and is convenient to use.It is widely used for maintenance and measurement.

Granite stone ruler color:Black

Marble square ruler packaging:generally packaged in wooden boxes.

Physical characteristics:

Specific gravity:2970-3070kg/㎡

Compressive strength:245-254N/m²

Strong abrasion rate:1.27-1.47N/m2

Linear expansion coefficient:4.6×10~6℃

Water absorption rate:0.13%

Shore strength:above HS70