Overhead projector

In an overhead projector having a housing having a light source therein and including a base for resting on a horizontal surface, a rear wall, a front wall and a top surface having a projection area on which a transparency maybe disposed and through which light passes from the light source, the improvement wherein the top surface slopes downwardly from the rear wall to the front wall and further comprising rotatable and infinitely variable stop means on the top surface adjacent the front wall engageable with the edge of a transparency in a selected one of said infinitely variable positions for aligning the transparency with said projection area, said stop means including adjustable stop means for presetting the distance of a leading edge of transparency from the front wall, said adjustable stop means comprising two spaced apart rods each rotatably mounted on said top surface about an axis disposed perpendicular to the top surface and the longitudinal axis of the rod and intermediate the ends thereof.