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ampere
a measure of electrical current

Avogadro's number
A unit of relative quantity equal to the number of atoms or atoms or molecules per mole of a substance. The currently accepted value is 6.0221415 X 10 to the 23rd power, per mole

avoirdupois
fancy name for the weight scale based on a pound containing 16 ounces

baker's dozen
13 units (one more than an ordinary dozen)

barrel
a measure of liquid volume equal in the United States to 31.5 gallons; it's also half a hogshead and onequarter of a butt

Beaufort
a scale that measures wind speed; also used for measuring hurricanes

bit
The smallest unit of information used in computer engineering, equal to oneeighth of a byte.

bolt
A large roll of cloth.

bucket
2 pecks or 16 quarts (dry measure)

bushel
2 buckets or 4 pecks (dry measure)

butt
2 hogsheads or 4 barrels  i.e., 126 gallons (liquid measure)

byte
A unite of information used in computer engineering, equal to 8 bits

caliber
A measure of the diameter of a bullet or shell

A jeweler's measure of weight (for diamonds) or purity ( for gold.)
carat

A temperature scale, also called centigrade, that places the freezing point of water at 0° and the boiling point at 100°.
Celsius

A measure of electric charge
coulomb

A quantity of logs measuring 128 cubic feet
cord

An ancient unit of length equal to about 18 inches
cubit

A unit of radioactivity
curie

A customary logarithmic measure most commonly used for measuring sound.
decibel

One sixteenth of an ounce
dram

a unit of type measurement
elite

A temperature scale that places the freezing point of water at 32° and the boiling point at 212°
Fahrenheit

A measure of water depth equal to 6 feet.
fathom

A traditional unit of liquid measurement equal to a gallon
flagon

Unit of distance equal to 220 yards or oneeighth of mile.
furlong

4 ounces (liquid measure)
gill

One seventhousandth of a pound
grain

A unit of land measurement equal to 2.47 acres
hectare

Measure of frequency
hertz

2 barrels or onehalf of a butt i.e. 63 gallons (liquid measure)
hogshead

A quantity of energy
joule

A temperature scale that sets absolute zero (the freezing point of all matter)at 0°; its degrees are equivalent to degrees Celsius + 273.
Kelvin

A measure of speed on the sea
knot

A unit of distance, used nautical, equaling 3 miles or 4.8 kilometers
league

A measure of electrical resistance
ohm

8 quarts or onequarter of a bushel (dry measure)
peck

A scale that measures whether a substance is an acid or a base. It goes from 0 to 14:0 is an acid, 14 is a base, and 7 is neutral.
pH

A unit of type measurement
pica

A unit of weight equal to 100 kilograms
quintal

A logarithmic scale that measure tremors, earthquakes, and the like
Richter

16.5 feet or 5.5 yards
rod

A scale that measures the intensity (called a category) of an earthquake.
SaffirSimpson

A traditional unit of quantity equal to 20
score

A unit of weight equal to 14 pounds or 6.4 kilograms
stone

A weight scale in which, unlike them ore common avoirdupois scale, a pound contains only 12 ounces
troy

A unit of electrical output
volt

A measurement of power
watt

