41. The school maintains a projector room with an slide projector, an overhead projector and a computer system. 42. Video projectors are digital replacements for earlier types of projectors such as slide projectors and overhead projectors . 43. Back to the overhead projector , guys .. 44. An overhead projector will flash the driving scene onto a big screen in front of the car. 45. To assist with his scouting report on Virginia, this week's opponent, he flicked on an overhead projector . 46. "It's simply another tool, like overhead projectors . 47. After switching its focus to overhead projectors in the late 1960s, it was renamed to VEB Polytechnik. 48. Take the overhead projector ( OHP ). 49. There was also an overhead projector called a " Dottograph " within walking distance of both players. 50. Gregory Chudnovsky warned the dozen students in the class, as David changed the slides in the overhead projector .
