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  2. SCIENCE INVENTION IDEAS

    TO give an absolute check for setting the clock, a photo-electric cell, or electric eye, is used to record with utmost accuracy the passage of a star over a given ... [ILLUSTRATED]

    Article : 124 words
  3. Synthetic "Marble" 99

    A NEW industry is likely to arise from the invention of a synthetic "marble" by a young Lancashire man. The new mixture is applied to iron ...

    Article : 86 words
  4. Extension Rod on Step-Ladder

    AN extension rod provided on the lefthand side of a step-ladder, especially a high one, is an excellent safety measure. When one has to stand on the ... [ILLUSTRATED]

    Article : 91 words
  5. A Spout and Handle for Drip Pans

    DRIP pans in machine shops will be much more easily emptied if provided with a spout at one end as shown. This may be done ... [ILLUSTRATED]

    Article : 78 words
  6. An Instant Cigarette Extinguisher

    A CIGARETTE can be instantly extinguished without crushing it by inserting the lighted end into one of the holes of a glass ... [ILLUSTRATED]

    Article : 67 words
  7. Worth Noting!

    CORKS dipped in paraffin, heated to the smoking point, will resist chemicals, as well as worms and insects. This treatment makes the corks airtight for use in ...

    Article : 188 words
  8. Electric Light in Desk Drawer Aids in Tracing

    THOSE who frequently make small tracings at a desk will find the illustrated idea a great help in their work. An electric light is installed in the top ... [ILLUSTRATED]

    Article : 80 words
  9. Radio Set Helps to Detect Loose Contact

    WHEN the toaster won't toast or the percolator won't "perk" at the customary speed, owing to a loose connection, the source of the trouble can be located ...

    Article : 94 words
  10. How to Obtain Sharp Focus When Enlarging

    WHEN enlarging trouble is often experienced in obtaining the sharpest focus for the projected image. The task can be simplified by ruling an over-exposed or ...

    Article : 76 words
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