1940s: Oscilloscope meter creates waveforms. Man's mouth and lips move. Students with tooth props speak in unison at desks.

Add to Lightbox Download sample Add to Package

Keywords

1940s black and white vintage ephemeral biology voice vocal educational sound sounds man men anatomical poster posters mouth waveform waves machine meter oscilloscope lip lips mouth mouths speak speaking smile smiling teeth tongue boy boys girl girls tooth prop teeth props desk desks class classroom speech therapy

File Details

Category: 1940s Viewed: 55 Downloads: 0

Share

1940s: Oscilloscope meter creates waveforms. Man's mouth and lips move. Students with tooth props speak in unison at desks.

ID : 135265

License: Royalty free

File	Size
	0.00 Mb

1940s: Oscilloscope meter creates waveforms. Man's mouth and lips move. Students with tooth props speak in unison at desks.