MEASLING the measurement interval. The definition holds for time, cycles, miles, events, and other measure of life units. (2) A basic measure of reliability for repair items; the mean number of life units during which all parts of the item perform within their specified limits, during a particular measurement interval under stated conditions. MEASLING An internal condition occurring in laminated base material in which the glass fibers are separated from the resin at the weave intersection. This condition manifests itself in the form of discrete white spots or "crosses" below the surface of the base material, and it is usually related to thermally induced stress. MEASUREMENT SENSITIVE SPECIFICATION A measure- ment sensitive document is one in which application of the require- ments depends substantively on some measured quantity (for example, the document contains requirement for dimensions that are critical to the interfacing of the item). MECHANICAL SPLICE An optical-fiber splice accomplished by fixtures or materials rather than by thermal fusion. Note: index-