Hence it may be considered to be satisfactory for the purpose of assessing the compliance of aggregates with an upper specification limit.

The tolerance values specified by the end-user are known as specification limits - the upper specification limit (USL) and lower specification limit (LSL) respectively.

The second category (type 2) deals with the Measure of Absolute Deviation from Target (MADT) values in excess of one-half of the difference between the upper specification limit and the target value.