The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Originally, BMW was an airplane engine manufacturer.
69
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
Castor oil is used as a lubricant in jet planes.
-5
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
A small airplane can fly backwards.
75
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43