Oscillograph in a sentence as a noun

This is like your phone wouldn't come with a music player, but would come with a full-fledged oscillograph instead.

CRTs came into use on oscillographs, with the physical galvonometers being replaced by a CRT about half a centimeter tall and 200mm wide displaying dots that were recorded on the photographic paper.

Oscillograph definitions

noun

a device for making a record of the wave forms of fluctuating voltages or currents