ON MILLI-AMPERE-SECOND TIMER AND MILLI-AMPERE-SECOND INDICATOR

We have produced a milli-ampere-second timer composed of an electron tube circuit and a break and make swich ; and a milli-ampere-second indicator attached to the former, which indicates accurately milli-ampere-second whether the time of swiching on an electric circuit be long or short. The mechanism of these above-mentioned is reported here in this article.