All flashlights have a reflector giving a wide enough beam of light. But if you want a point — for example, the light pointer of the lecturer? Narrow beam, as if from hidden lamps in detective films, will Give a simple nozzle. For its production will need a plastic Cup suitable diameter and lens from diascope to view the slides. In the bottom of the Cup making the hole, on which the acetone is glued to the plastic rim of the eyepiece.
Recommend to read
INSTEAD OF WATERCOLORS
Do not rush to throw away the plastic packaging from used water-colour paints. It can be used for storage of small parts. L. MALAMUZH, g. Zolotonosha
THE INSTRUMENTAL IN THE FRIDGE
Not in a hurry to dump an old refrigerator (even if it was only on the door). He still will serve as a closet pantry and door stamped inner wall can be adapted for storage for tools....
