The ball on top of a flagpole is called a 'truck'.
24
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
About 39,000 gallons of water are used to produce the average car!
14
Whale oil was used in automobile transmissions as late as 1973.
56
The life boat was patented in 1845!
29
The cigarette lighter was invented before the match.
210
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Any modern jet is capable of breaking the sound barrier.
34