An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Whale oil was used in automobile transmissions as late as 1973.
56
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
The ball on top of a flagpole is called a 'truck'.
24
Originally, Nintendo was a playing card manufacturer.
70
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
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