1. (n.) An instrument for observing or tracing vibrations.

2. (n.) An instrument resembling the phenakistoscope.

Flexowriter typewriter J-scope Teleplotter alphabetical printer digital graph plotter hard copy harmonograph kymograph magnetic recorder magnetic tape microcards microfiche microfilm oscillograph oscillograph recorder oscillometer oscilloscopes printout punch cards punched tape reader readout recorder relay register seismograph seismometer seismoscope tape reader teletypewriter vibrograph vibroscope