New 3M 1800 BJ2 Overhead Projector Classroom Transparency Projector

3M 1825 OVERHEAD PROJECTOR with new lamp free shipping

3M 2000 AG Overhead Portable Briefcase Projector - Foldable Compact Tested Works

3M Compact Folding Portable Overhead Projector 2000 AG Carrying Case Tab G2U

Vintage 3M 1700 Overhead Projector Home School Office Tested Works!

3M 1800 BJ1 Overhead Transparency Projector with Dual Bulb

3m 1830 overhead projector WITH NEW LAMP

Apollo Horizon 2 Overhead Projector 16000