To sort the slides of a copy of a small drawing, figure will help this simple lamp. For its production will need a cardboard box of suitable size, a sheet of plywood, a screen of frosted plexiglass and a few cartridges with electric lamps. Spread it evenly on the base of the cartridges, and secure with screws. Connect them with one wire in parallel. Slot in the lid of the box window and set the screen To the side walls of the punch vents.
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