Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The first alarm clock could only ring at 4 a.m.
120
There are only 14 blimps in the world.
69
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
The IRS processes more than 2 billion pieces of paper each year.
28
The life boat was patented in 1845!
29