1 Jan 1960 Jahr - Overhead Projector
Beschreibung:
Overhead projector is a presentation device that projects the enlarged image of writing or drawing on clear or transparent film placed on it onto a wall or screen by means of an overhead mirror. It is a variant of slide projector that is used to display images to an audience.
Zugefügt zum Band der Zeit:
Datum:
Abbildungen:
![]()