Granite square ruler

 

Using of granite square ruler:

Square gauge include feet ,angle plate and so on (Special tool to 90 degrees). Used to test the verticality of workpiece and equipment installing. Installation and scribing orientation of mechanical industry is an important measurement tools. It is characteristic of high accuracy, good stability, convenient in maintenance.

 

Material : Using "Jinan green" stone by hand-grinding machining made.

Merit : glossy black ,structure of precision ,homogeneous structure ,high strength ,hardness , good stablility, no rust, acid-proof alkali, good wearproof ,magnetization-resisting and high durability  .In general heavy load and high temperatures can maintain high precision.

 

 

Physical characteristics:

Specific gravity:2970----3070kg/㎡

Compressive strength: 245---254N/㎡

Coefficient of linear expansion: 4.6×10～6℃

Water absorption: 0.13%

Shore hardness: more than Hs70

 

Standard: According to the national standard GB/T6092-2004 manufacturing.

Dimension :(We can make the products according to customer 's design )
3.Detection parallelism and perpendicularity