Statistical quality control (SQC) has been in use since the 1930s, when it was performed with paper, pencil, and maybe a slide rule. Statistical quality control (SQC) has been in use since the 1930s, when it was performed with paper, pencil, and maybe a slide rule. As such, it was originally somewhat time consuming, and…
The American Petroleum Institute (API), headquartered in Washington, DC, USA is a world leader in the development of standards for all aspects of the oil and natural gas industry. When using API sanctioned gages for the inspection of products or calibration of other gages, it is critical that the user have a high quality gage,…
Measuring vs. Gaging: The Value of Conserving Measuring Range Many people confuse the act of measuring a part with that of gaging a part. And although they are quite similar, understanding their subtle differences can improve the accuracy and efficiency of both processes. Measuring is the process of determining the dimension of a part by…
All gaging equipment must be calibrated periodically to ensure that it’s capable of performing the job for which it’s intended: i.e., measuring parts accurately. This has always been necessary for the purpose of maintaining quality, but there are now additional, external reasons to establish and maintain a regular program of gage calibration: customers’ requirements. More…