35mm 35mm slide projector permanently located in the classroom, either in a booth or equipment tower .
Related equipment is generally larger and sturdier, format's recording considered superior.
Formerly the standard for broadcast-quality, still used at many cable TV stations. AV Projectors Audio-Visual Projectors. This category includes overhead projectors , 35mm slide projectors , and 16mm film projectors . Occasionally, there is a combination of board types in the classroom. In such occurrences, the board type will refer to the permanently installed writing board, with mention of the mobile writing board in the comments area.