Granite V-blocks are ideal for precise inspections, measurements, and alignment marking in the precision machining and component manufacturing industries. They are the perfect tool for testing cylindrical objects.

Gneiss V-blocks are made from "Jinan Green" stone material, processed through mechanical and hand finishing, featuring high precision, long lifespan, and resistance to deformation. They are suitable for precise inspection, measurement, and marking/positioning tasks in the precision machining and component manufacturing industries.

Granite V-blocks are hand-finished for precision, featuring high accuracy, long service life, resistance to deformation, non-corrosive, non-magnetic, non-malleable, and excellent wear resistance.

Granite V-blocks are precision benchmark measuring tools made from high-quality stone materials. They serve as ideal reference surfaces for inspecting instruments, precision tools, and mechanical components, particularly in high-precision measurement applications. Derived from the underground rock strata, these blocks have undergone millions of years of natural aging, ensuring a highly stable form that is not prone to deformation due to conventional temperature variations. Subjected to rigorous physical testing and selection, the granite material has a fine crystalline structure and is extremely hard. As granite is a non-metallic material, it exhibits no magnetic response and no plastic deformation. Its high hardness contributes to excellent precision retention. Even upon impact by heavy objects, it may only lose a few particles of stone debris. They outperform precision measurement components made from cast iron and steel, providing high and stable precision.