Abstract
For a given lamp we wish it to have a superior quality, and for a given grouy of lamps we again wish them to be uniform in quality as well as superior.This uniformity in lamp quality is an aim of the lamp engineers and alto a desire of the majority of consumers.
In this paper the author first explains the meaning and criterion of lamp quality and then he relates how the uniformity in quality has been specified in the lamp specifications. And finally he proposes a method that may express most reasonably and accurately the uniformity in quality in which he exp-esses the degrec of uniforniity in pere cent or score.
