The life boat was patented in 1845!
29
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
The first alarm clock could only ring at 4 a.m.
120
Jumbo jets use 4,000 gallons of fuel to take off.
19
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
2