fault greater than e. The following are not considered to be significant faults, even when they exceed e: - faults arising from simultaneous and mutually independent causes in the instrument; - faults implying the impossibility to perform any measurement; - faults being so serious that they are bound to be noticed by all those interested in the result of measurement; or - transitory faults, being momentary variations in the indication which cannot be interpreted, memorized or transmitted as a measuring result