Nominal Values

In a production process, a nominal size or an actual size is specified, for an item. However, there can be a slight but accepted deviation. This deviation is referred to as tolerance.

Nominal value, in Quality, is specified to provide tolerance limits for a nominal size, accommodating deviations, if any.

Earlier, it was possible to only measure values between the Norm and the Upper Limit and Lower Limit of inspection orders. The upper limit always had to be greater than the norm and the lower limit always had to be less than the norm.

Using the nominal value functionality, you can specify a tolerance range for a nominal value. You can specify a pre-defined nominal table based on accepted engineering standards.

In some cases, the tolerance level must be greater or lesser than the nominal values. For example, matching the diameter of the shaft with that of the hole. The upper and lower limits specified for the diameter of the hole must be greater than the nominal value, while the upper and lower limits specified for the diameter of the shaft must be lesser than the nominal value.

This functionality can also be used to process inspection orders.