Wiktionary
oscillographs
n. (plural of oscillograph English)
Usage examples of "oscillographs".
Their oscillographs showed the same picture and the observers had drawn the same conclusions about their instruments as Sgt.
He was certain that the situation in this vicinity would remain quiet from now on and he reproached the guard for reporting the next morning that one of the oscillographs placed on the other hill had registered a colorful pattern on its screen.