There are several different tools available for the measurement and inspection of parts and products. The specific application often determines the best choice as each tool has its own benefits and drawbacks. Over the years, these tools have become more advanced in order to keep up with improved quality standards.
Manufacturers are increasingly adopting quality standards such as Six Sigma and ISO-9000 in order to continuously improve their products and processes. In addition to reducing or eliminating product defects, these programs strive to detect problems during the manufacturing process. This allows companies to prevent adding value to already defective works in progress. In order to be successful with this approach, manufacturers need to measure every step of their processes, including the various stages of product assembly that may never have been measured before.