1 sept 1950 año - OHP
Descripción:
Overhead ProjectorIt is made up of a base with a clear glass top housing an interior light and an adjustable arm with a lens and a mirror.
A transparent sheet is placed over the glass top. and the machine "projects" the sheet's writen material onto whatever surface the lens is facing.
Añadido al timeline:
fecha:
1 sept 1950 año
Ahora mismo
~ 73 years ago
