The inspection plate also known as cast iron inspection plate, the test platform, cast iron test platform, sophisticated detection platform. 
 (1) the purpose of inspection plate: the basis of precision measurement plane, peace-foot square box, the V-frame (iron), bending, foot rectangular, cylindrical Square and other tools used in conjunction. Apply to the inspection of a variety of machine tools, used to check the dimensional accuracy of parts or deviant behavior, the baseline detection tool is also indispensable in the Machinery Manufacturing; 
 (2) the production standards of the test platform: manufactured according to the national GB7947-1999 standard. 
 3 cast iron inspection plate material: high-strength cast iron HT150-300, face hardness of HB170-350. 
 The importance of the test tablet effectiveness of treatment: flat after the two artificial effectiveness (annealed) or natural aging 2-3 years in order to reduce the internal stress in the casting, to eliminate the flat part of the internal white tissue to improve the platform work surface the hardness and wear resistance of cast iron platform, cast iron plate of the accuracy and stability, good wear resistance. 
 5 Specification of inspection plate: 100 * 100-4000 * 10000,200 * 300-4000 * 10000 conventional GB products are in stock and special-shaped products can be customized, larger than this specification can be spliced ??handle. 
 Cast iron test platform to ensure accuracy: After finishing, manual scraping process.