The selection of verification tools should be selected according to the accuracy level of the inspection platform. The correct and reasonable selection of inspection tools is an important guarantee for the verification results of the inspection platform.

Graphite shedding and high carbon content will cause black rust spots, as well as uneven surface of the assembly platform, with pores, and blackening caused by spitting acid.

The shape and structure characteristics of the testing surface plates: The shape of the working surface is divided into rectangle, square or round. The working surface can be processed with V-shaped, T-shaped, U-shaped grooves, round holes, and long holes for different test work needs.

Cast iron angle plates are used for component inspection and clamping in machining. It is used to check the 90° angle of the workpiece.

Cast iron surface plate measuring tools mostly use gray cast iron or nodular cast iron for casting. Gray cast iron should be used to obtain qualified casting blanks. Through many links such as sand grinding-modeling-smelting-pouring-finishing-viewing, the quality of the castings must be controlled well.

Cast iron surface plate is an indispensable basic tool in mechanical manufacturing, and often used for various inspection tasks.