Upper specification limit (USL),
Definition of Upper specification limit (USL):
A value that represents the highest range of a variable. The upper specification limit is the benchmark below which a product or service performs. In addition, the upper specification limit is often accompanied by a lower specification limit, but not always, as many product will have only one control limit. Also called upper spec limit.
Meaning of Upper specification limit (USL) & Upper specification limit (USL) Definition
