The ball on top of a flagpole is called a 'truck'.
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The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Kleenex tissues were originally used as filters in gas masks.
46
A Citreon 2CV with an oil leak once travelled 500 miles through Italy after its gearbox was filled with bananas!
16
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
The cigarette lighter was invented before the match.
210
Sony researchers have developed a refrigerator that only opens when you smile.
9