To ensure a part meets dimensional requirements, such as tolerances, a metalcasting facility can check the dimensional accuracy of a part manually or with a coordinate measuring machine (CMM). Checking the dimensional accuracy of a part helps guarantee the customer won’t have to perform further costly machining on a part to meet the specified dimensions.
CMM has improved the speed and accuracy of measuring casting dimensions, and computerization has made it repetitive and able to be used as a statistical tool.