episcope
/ˈɛpɪskoʊp/
noun
- An optical device that projects an image of an opaque object, such as a page or photograph, onto a screen, used before modern digital projectors.
- Before PowerPoint, lecturers relied on an episcope to display images.
- The teacher used an episcope to show the class a page from an old book.
- The museum had an antique episcope in its collection of educational tools.
Synonyms