3M 9085 Overhead Projector
The 3M model 9085 projector has a wide angle lens, giving you a large projection area even when close to the wall. This makes it easier to work in smaller rooms or hallways. It also has a dual element Fresnel (lower) lens, for a sharper projection with crisp lines. Another plus is that uses a 410 watt FXL lamp giving it a very bright 4000 Lumen output, so you won't need to work in a totally darkened room.