Granite parallels also known as granite leveling rules, marble leveling rules.

Granite flat gauge can replace contour block, supplied in pairs. Granite leveling gauge is used in all walks of life, and its main function is to measure the parallelism of parts.

Granitic horizontal line gauge USES the natural marble of high grade material to pass machine processing, manual grind and become. Black luster, precise structure, uniform texture, good stability, high strength, high hardness, can maintain stability under heavy load and general temperature. Granite flat gauge has the characteristics of acid and alkali resistance, abrasion resistance, and there will be no deformation, magnetization, rust and other problems.

Granitic level standard is drawn from the rock layer of underground high grade, through natural ageing of 100 million years, configuration is very stable, need not worry because of conventional difference in temperature and produce deformation. Granitic granitic material with strict physical test and selection, fine crystal and hard texture. Granite leveling gauge is superior to the precision measuring cast iron leveling gauge made of high quality cast iron and steel.