Imperial and Metric Measurements

There is a unit of measure in the imperial system (on which the U.S. customary system is based) smaller than an inch. It's called a thou, and it is one/one-thousandth of an inch.

The US's Crazy Measuring System. Time for Metric?
Think Fact – Think Fact

list25 – list25

DNews – DNews

Are Imperial Measurements outdated? | Number Hub with Matt Parker | Head Squeeze
Brit Lab – Brit Lab

Key Facts In This Video

1. Three barleycorns equal one inch. 00:34

2. One nautical mile equals 6,080 feet, which is much different from a standard mile. 01:06

3. A line is the same length as a poppyseed, and four poppyseeds equal one barleycorn. 02:28

36 Unusual Units of Measurement - mental_floss on YouTube (Ep.10)
Mental Floss – Mental Floss

Key Facts In This Video

1. A "dash" of an ingredient in cooking is exactly 1/8 of a teaspoon. 00:37

2. A "hogshead" is a unit of measurement for wine, which equals 63 gallons. A "butt" equals two hogsheads. 01:55

3. An "oxgang" is a unit of measurement used to measure an area of land approximately equivalent to 15 acres. 06:30

eHow – eHow

How to Compare the Metric System & the U.S. Customary System for Middle School ... : Math Made Easy
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