These days, where competition between companies is great, it is essential that they hold the most optimized processes possible, ensuring the quality of products and services and reducing operational costs. Thus, the use of tools or methodologies to meet the performance of processes and facilitate the detection of problems to reduce the variability is essential to ensure their competitiveness. The Statistical Process Control, is one of the seven quality tools used to provide information for more effective diagnosis in the prevention and detection of defects and problems in the evaluated processes and, consequently, helping increase productivity and results of the company, avoiding waste, being of greatest importance to guarantee the quality of the company.
In this study, we intend to discuss / evaluate the variability introduced into a process capability study, using control charts, and having on base the use of uncalibrated measurement equipment vs. calibrated measurement equipment.