What are the differences between scraping and grinding plates

Scratching tablet is a flat reference tool used for workpiece inspection or marking. Scraping and grinding plates are widely used and are applied in industries such as mechanical manufacturing, chemical industry, hardware, aerospace, petroleum, automobile manufacturing, and instrument manufacturing. Scraping and grinding plates: mainly used as a benchmark for checking workpiece errors. Scraping and grinding plates play a crucial role in the mechanical manufacturing process and are the most fundamental benchmark tool for pre factory inspection of each workpiece.