forfaringssett went on a kontrollbana uppteckna forekomst on different stellen during a control period upptredande foreteelser and apparatus for implementation of such a thing

摘要

A method and an apparatus for recording the number of phenomena, for instance of defects of a product continuously manufactured, wherein a graphic record is made on a recording tape in a direction transverse to the advancing direction of said recording tape and at a length corresponding to the sum of unit steps of which the number is equal to the number of phenomena occurring during a measuring or counting period.