The first alarm clock could only ring at 4 a.m.
120
The United States produces enough plastic film annually to cover the entire state of Texas.
13
The ball on top of a flagpole is called a 'truck'.
24
Whale oil was used in automobile transmissions as late as 1973.
56
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
