Material: Granite mainly consists of pyroxene,pkaguickase,a small amount of olivine ,biotite and micromagetite.Its structure is hard and compact.It has solidified in a natural way over millions of year resulting in his hogeneity ,reliable stability,high strength and super hardness .It can keep relatively high precision under heave load.It’s suitable for measuring applications in factories and laboratories.

 

Applications: Used to measure verticality ,planar degree and straightness of workpieces.

 

Salient Features:

              1 Millions of natural aging, organiazational structure ,tiny linear expansion cosfficient and no stress make the precision super

              2 Super rigidity, high hardness and great resistance-wear

              3 Do’t oiling ,longusing life and easy maintainability

              4 Keep datum precision in normal tempreture.

              5 No magnetized,no sluggishness,and not be effected by enviroment.