Abstract :
THE use of the oscillograph for recording the instantaneous values of electrical phenomena has steadily increased in both scholastic and commercial institutions. Formerly it was seldom necessary to use the oscillograph in the field. However, due to the increasing complexity in transmission circuits and in railway electrification problem, it has become more and more desirable to have a special, portable, commercial oscillograph which, besides having the properties of the best laboratory oscillograph shall also be extremely compact and light in weight.
