Units

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Units

All the units recognized by the add-in are listed below grouped by their dimension.

Common abbreviations may often be used in place of the unit's name, e.g. 'm' for meter. In addition, prefixes such as 'kilo' or 'nano' are allowed on units where they are typically used. Abbreviations for prefixes are also understood, e.g. 'km' for kilometer.

The definition of each dimension is immediately below the dimension name. So for compound dimensions, for example speed, the definition is written Length . Time[-1] - meaning speed is defined as the length traveled per time.

Some dimensions, such as acceleration do not have their own units. Sometimes units are defined for certain dimensions as a convenience or to match common conventions e.g. mph (miles-per-hour) for speed.

Here is the key to reading the entries

The Dimension Name

A description of the fundamental units with this dimension.

Unit	Abbreviation	Prefixes	Notes
a unit in this dimension	the unit's abbreviation if any	Yes if it accepts common prefixes (kilo, milli etc.)	Some notes about the unit

The dimensions below are listed alphabetically.

Absolute Viscosity

Mass . Length[-1] . Time[-1]

Also known as:Dynamic Viscosity

Unit	Abbreviation	Prefixes	Notes
poise	P	Yes
reynold	reyn	Yes	A reyn is 1 lbf s / in^2

Absorbed Radiation Dose

Length[2] . Time[-2]

Unit	Abbreviation	Prefixes	Notes
gray	Gy	Yes	SI unit, see also : http://en.wikipedia.org/wiki/Gray_(unit)
rad		Yes
rem		Yes
sievert	Sv	Yes

Absorbed Radiation Dose Rate

Length[2] . Time[-3]

Dimension has no declared units of its own

Acceleration

Length . Time[-2]

Unit	Abbreviation	Prefixes	Notes
galileo	Gal	No
gravity		No	One gravity on Earth's surface

Angular Acceleration

Plane Angle . Time[-2]

Dimension has no declared units of its own

Angular Momentum

Length[2] . Mass . Time[-1]

Also known as:Action

Unit	Abbreviation	Prefixes	Notes
atomic-unit-of-action		Yes

Angular Velocity

Plane Angle . Time[-1]

Unit	Abbreviation	Prefixes	Notes
strob		Yes

Area

Length[2]

Unit	Abbreviation	Prefixes	Notes
acre		No	Differences exist between international and US acre - this is the US definition, repeated as acre-us
acre-it		No	International definition
acre-us		No
are		Yes
barn		Yes	Very small area measure used humourously by nuclear physicists in scattering experiments
barony		Yes	Four thousand intenational acres , acre-it
bovate		No	Very old English
bunder		Yes	In modern times same as a hectare
carucate		No	Same as an old English 'hide-old'
circular-inch	circ-in	No	US defintion
circular-inch-it		No	International defintion
circular-inch-us		No	US defintion
circular-mil		No	US definition
circular-mil-it		No	International definition
circular-mil-us		No	US definition
circular-thou-it		No	International definition
dunam		No	Is 1000 m^2
feddan		Yes	Middle Eastern unit
hectare	hect	Yes
hide		No
hide-it		No
hide-old		No	Very old English defintion
hide-us		No
jerib		Yes	Middle Eastern unit, commonly equal to the hectare. See jerib-afghan
jerib-afghan		Yes	Afghan jeribs are 1/5th of a hectare
jitro		No	Czech
joch		No	Austrian
jutro		No	Croat
meter-square		Yes	Entered under this name as a convenience, better to use m^2.
mile-square		Yes	Entered under this name as a convenience, better to use mile^2
ngarn		Yes	Thai unit
rai		Yes	Thai unit
rood-area		No	1 rood = 1/4 of an acre, this is based on acre-us, see rood-area-us
rood-area-it		No	Based on acre-it
rood-area-us		No
shed		No
stremma		No	Is 1000 m^2, same as a dunam
talangwah		Yes	Thai unit
township		No	US definition on mile-us (36 square US miles)
yardland		No	Definition based on acre-it (30 acres)

Capacitance

Time[2] . Mass[-1] . Length[-2]

Unit	Abbreviation	Prefixes	Notes
abfarad	GF	Yes
farad	F	Yes

Current

A fundamental dimension

Unit	Abbreviation	Prefixes
abampere	aA	Yes
ampere	A	Yes
statampere		Yes

Density

Mass . Length[-3]

Dimension has no declared units of its own

Dimensionless

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
basis-point	bps	No
brix	degBx	No	Food and wine industry unit
dozen		No
flock		No	Two score
gross		No
nest		No	Old English term
none		No
one		No
percent	%	No
score		No
unity	1	No

Dot Pitch

Item . Length[-1]

Unit	Abbreviation	Prefixes	Notes
dots-per-cm	dot-per-cm	No

Electric Charge

Current . Time

Unit	Abbreviation	Prefixes
abcoulomb	aC	Yes
coulomb	C	Yes
faraday		Yes
franklin	Fr	Yes
statcoulomb	statC	Yes

Electric Conductance

Time[3] . Current[2] . Mass[-1] . Length[-2]

Unit	Abbreviation	Prefixes	Notes
siemen	S	Yes
siemen	mho	Yes	The mho is an old term for siemens http://en.wikipedia.org/wiki/Mho#Mho

Electric Field Strength

Length . Mass . Current[-1] . Time[-3]

Dimension has no declared units of its own

Electric Potential

Length[2] . Mass . Current[-1] . Time[-3]

Unit	Abbreviation	Prefixes
abvolt	abV	Yes
statvolt	statV	Yes
volt	V	Yes

Electric Resistance

Length[2] . Mass . Current[-2] . Time[-3]

Unit	Abbreviation	Prefixes	Notes
ohm		Yes

Electric Resistivity

Length[3] . Mass . Current[-2] . Time[-3]

Dimension has no declared units of its own

Energy

Length[2] . Mass . Time[-2]

Also known as:Moment/Torque

Unit	Abbreviation	Prefixes	Notes
Calorie	kcal	Yes
british-thermal-unit	btu	Yes	Same as BTU (all caps) below and BTU-it, this is BTU(IT)
british-thermal-unit	BTU	Yes
british-thermal-unit-ISO	BTU-iso	Yes
british-thermal-unit-IT	BTU-it	Yes
calorie	cal	Yes
centigrade-heat-unit	CHU	Yes
electron-volt	eV	Yes
erg		Yes
foot-pound	ftlb	Yes
inch-ounce	inoz	Yes
inch-pound	inlb	Yes
joule	J	Yes
kilocalorie	kcal	Yes
pound-foot	ftlb	Yes
rydberg	Ry	Yes
therm		Yes	Same as therm-us
therm-ec		Yes
therm-uk		Yes	1 therm-uk is 100,000 Btu
therm-us		Yes
ton-of-tnt		Yes

Entropy

Length[2] . Mass . Temperature[-1] . Time[-2]

Unit	Abbreviation	Prefixes	Notes
clausius		Yes

Flow

Length[3] . Time[-1]

Dimension has no declared units of its own

Force

Length . Mass . Time[-2]

Unit	Abbreviation	Prefixes	Notes
Strong-Cobb		Yes	Pharmacuetical Industry unit
dyne		Yes
gram-force	gf	Yes
kilogram-force	kgf	No
kilopond	kp	Yes
kip		Yes	Kips have two different common abbreviations kip and klb
kip-force	klb	Yes
long-ton-force		Yes
millinewton	mN	No
newton	N	Yes
ounce-force	ozf	No
pound-force	lbf	Yes
poundal	pdl	Yes
short-ton-force		Yes
sthene	sn	Yes
ton-force		Yes
tonne-force		Yes

Frequency

One . Time[-1]

Also known as:Activity/Wave Count

Unit	Abbreviation	Prefixes
becquerel	Bq	Yes
curie	Ci	Yes
cycle		Yes
hertz	Hz	Yes
revolution-per-minute	rpm	No
revolution-per-second	rps	No
rutherford	Rd	Yes

Fuel Consumption

One . Length[-2]

Unit	Abbreviation	Prefixes	Notes
kilometers-per-liter	kpl	No
miles-per-gallon	mpg	No

Fuel Efficiency Mass

Length[2] . Mass[-1] . Time[-2]

Dimension has no declared units of its own

Information

A fundamental dimension

Unit	Abbreviation	Prefixes
bit	b	Yes
byte	B	Yes
gigabyte	GB	No
kilobyte	kB	No
megabyte	MB	No
nibble		No
nybble		No
terabyte	TB	No
word		No

Information Rate

Information . Time[-1]

Unit	Abbreviation	Prefixes	Notes
baud		Yes

Insolation

Mass . Time[-2]

Also known as:Energy Distribution Over Area

Unit	Abbreviation	Prefixes	Notes
langley	Ly	Yes

Item

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
dot		No
pixel		No

Kinematic Viscosity

Length[2] . Time[-1]

Unit	Abbreviation	Prefixes	Notes
stoke	St	Yes

Length

A fundamental dimension

Also known as:Distance

Unit	Abbreviation	Prefixes	Notes
angstrom	Ang	No
arpent		No	An old French measure, still in use in Canada and Louisianna
arshin		Yes	Commonly used as an area unit too, squared
astronomical-unit	AU	No
atomic-unit-of-length		No	Same as a Bohr (the radius of Hydrogen)
barleycorn		No	Defunct historical measure
bicron		No	Same as a picometer
bohr		No
brasse		No	Equivalent of the English Fathom
braza		No	Spanish measure, can vary
breadth		No	Historical measure of interest in flags
cable		No	US standard
cable-imp		No	Imperial measure
cable-it		No	International standard
cable-us		No	US standard
chain	ch	No	Gunter's Surveyor's standard
charriere		No
cubit		No	A cubit is 18 International inches by modern convention, historically it's all over the place
ell		No	Based on US inch
ell-it		No	Based on International inch
ell-us		No	Based on US inch
encablure		No	Equivalent to the English cable
fall-scots		No	Mostly a Scots unit
fathom		No	1 fathom is 6 feet
fermi	fm	Yes
finger		No
finger-cloth		No
foot	ft	No	US (foot-us) definition
foot-ben		No	A historical foot definition Benoit
foot-cape		No	A historical foot definition Clarke's Cape
foot-indian		No	A historical foot definition Indian
foot-it		No	International foot
foot-jersey		No	See pied-perche
foot-scots		No
foot-sears		No	A historical foot definition used by the Sears Company
foot-us		No
french		No	Same as a charriere
furlong	fur	No
furlong-it		No
furlong-scots		No	Based on 'falls'
furlong-us		No	1 furlong-us is 220 yard-us
hand		No	Four International inches
hundred-foot		No
inch	in	No	US inch, same as inch-us
inch-it		No	Inch based on international foot , foot-it
inch-us		No
knot-length		No
league		No	A statue league, see nautical-league also
light-day		No
light-hour		No
light-minute		No
light-second		No
light-year	ly	No
light-year	l.y.	No	Alternative abbreviation
ligne		No	A Canadian version also exists as linge-ca. Equivalent to a 'line'
ligne-ca		No
line-length	ln	No	Not to be confused with electrical 'lines'
line-length-button		No	Garment industry measure
link		No
link-gun		No	Link per Gunther's Surveyor's = 1/100 chain
link-ram		No	Link per Ramsden's Engineer's, same as international foot
lug		No	Same as a rod-it, see also lug-great.
lug-great		No	One more international yard than a regular lug.
lunar-distance	LD	No	The length of the semi-major axis of the moon's orbit. Used to measure astronomical distance near to earth.
meter	m	Yes
mickey		No	1/200th of a US inch, inch-us
micron		No
mil		No
mil-swe		No	Norway and Sweden the mil is a large measure of length ~10km, not a fine one
mile	mi.	No	US mile
mile-geo		No	Geographical mile, of historical interest
mile-it		No	Internation mile
mile-scots		No	Based on 'falls'
mile-tele		No	Telegraph mile, of historical interest
mile-us	mi.	No	US mile
nail		No	Cloth measure = 2.25 inch-it
nautical-league		No
nautical-mile	nmi.	No	Same as International Nautical Mile
nautical-mile-adm		No	Admiralty Nautical Mile
nautical-mile-it	nmi.	No	The international nautical mile
pace		No
palm		No
palmo		No
parsec	pc	Yes
perch		No	1 perch is 1 rod, historical measure
pica-ps		No	Postscript definition
pied		No	See pied-de-roi and pied-ca.
pied-ca		No	See pied-de-roi-ca.
pied-de-roi		No	Also called the Paris foot. A Canadian version also exists as pied-de-roi-ca.
pied-de-roi-ca		No	Also called the Paris foot. An English version also exists as pied-de-roi.
pied-perche		No	A Channel Islands measure also called the Jersey Foot.
point		No	Metric definition
point-ata		No	Advertising Typographers Association definition
point-eur		No	European, Didot definition
point-ps		No	Postscript definition
pole		No	1 rod same as 1 pole
pouce		No	A Canadian version also exists as pouce-ca. Pouce is the French for 'thumb'. Equivalent to 'inch'
pouce-ca		No
rod		No	Rods and roods are the same units in length, for rood area see rood-area
rood	ro	No	40 rods in a furlong-us
rope		No	20 international feet, foot-it, uncommon now
siegbahn		No	Same as an x-unit
span		No	Historical measure
spat		No
stick		No	2 international inches, historical only
stigma		No	Same as a picometer
stunde		Yes	Swiss
thou	mil	No	Same as a mil
toise		No
twip		No
vara		No
verhst		Yes	Alternate spelling of verst
verst		Yes	Russian, also speleed werst
x-unit		No	Same as a siegbahn
yard	yd.	No	US definition, same as yard-us
yard-it		No	International yard definition
yard-us		No

Linear Momentum

Length . Mass . Time[-1]

Dimension has no declared units of its own

Luminance

Luminous Intensity . Length[-2]

Unit	Abbreviation	Prefixes	Notes
foot-lambert	fLa	Yes
lambert	La	Yes	Some times Lamberts are abbreviated 'L' but this is officially a liter
meter-lambert	nit	Yes	Same as a nit
nit		Yes	1 Candela / meter^2 = 1 nit
stilb		Yes

Luminous Energy

Luminous Intensity . Time

Unit	Abbreviation	Prefixes	Notes
talbot		Yes

Luminous Flux

Length[2] . Luminous Intensity

Unit	Abbreviation	Prefixes	Notes
lumen	lm	Yes

Luminous Intensity

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
bougie	bg	Yes	Same as candela
candela	cd	Yes
candle		Yes	Same as candela
candle-power	cp	Yes
carcel		Yes
centimeter-candle		No
flame		Yes
foot-candle	ftc	No
lux	lx	Yes	1 lux = 1 lumen per square meter
meter-candle		No
nox		Yes
phot	ph	Yes

Magnetic Flux

Length[2] . Mass . Current[-1] . Time[-2]

Unit	Abbreviation	Prefixes	Notes
abampere-turn	abAt	Yes
ampere-turn	At	Yes
gilbert	Gi	Yes
line		Yes	Maxwells used to be 'lines'
maxwell	Mx	Yes
weber	Wb	Yes	One weber / m^2 = 1 tesla

Magnetic Flux Density

Mass . Current[-1] . Time[-2]

Also known as:Magnetic Field/Magnetic Induction

Unit	Abbreviation	Prefixes	Notes
gauss	G	Yes
oersted	Oe	Yes	http://en.wikipedia.org/wiki/Oersted
tesla	T	Yes

Magnetic Inductance

Length[2] . Mass . Current[-2] . Time[-2]

Unit	Abbreviation	Prefixes
abhenry	abH	Yes
henry	H	Yes
stathenry	statH	Yes

Mass

A fundamental dimension

Also known as:Weight

Unit	Abbreviation	Prefixes	Notes
atomic-mass-unit	u	No
atomic-mass-unit	amu	No
carat	ct.	No	Metric carat
clove		Yes
crith		Yes
dalton	Da	No
dram		No	Do not confuse with drams-fluid
dram-troy		No	Apothecary or troy standard, much more than regular dram
funt		No	Russian
gamma	Same as a microgram	Yes
geepound		Yes	Same as a slug
grain		Yes
gram	g	Yes
grave		Yes	Same as a kg
hundredweight	hwgt	No	Also known as a short hundredweight
karat	kt.	No	US/English karat
long-hundredweight		No
long-ton		No
mark		No
metric-ton	t	No
metric-tonne	t	No
mite		Yes
mite-metric		Yes
ounce	oz	No
ounce-troy	ozt	No
pennyweight	pwt	No	Sometimes abbreviated dwt too
pound	lb	Yes
pound-troy	lbt	Yes
quintal		No
scruple		No	Do not confuse with fluid-scruples
sheet		No
short-hundredweight		No
short-ton	ton	No
slug		Yes
stone		Yes
sun		No	The mass of our Sun
ton		Yes
tonne	t	Yes

Mass Flow

Mass . Time[-1]

Dimension has no declared units of its own

Molar Flow

Substance . Time[-1]

Dimension has no declared units of its own

Mole Flux

Substance . Time[-2]

Also known as:Catalytic Activity

Unit	Abbreviation	Prefixes	Notes
katal	kat	Yes

Moment Of Inertia

Length[2] . Mass

Unit	Abbreviation	Prefixes	Notes
inertial-mass	kgm2	Yes

Musical Tempo

A fundamental dimension

Also known as:Beat

Unit	Abbreviation	Prefixes	Notes
breve		No
crotchet		No
minim-tempo		No
note		No
quaver		No
semibreve		No
semiquaver		No

Plane Angle

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
Pi		No	Since this software defines derivative units in terms of reference units, it's convenient to have Pi defined for purposes of angles
angular-mil		No
arc-second		No
arcminute	'	No
arcsecond	"	No	Single double quote
arcsecond	''	Yes	Double single quote abbreviation
degree	deg	No
gradian	grad	No	Sometimes also known as a 'gon'
octant		No
quadrant		No
radian		No	We cannot use rad to be the abreviation for 'radian' because rad is abbreviation for Radiation Dose Quantity.
revolution		No
sextant		No
sign		No

Power

Length[2] . Mass . Time[-3]

Unit	Abbreviation	Prefixes	Notes
horsepower	hp	Yes
horsepower-electrical		No
horsepower-euro-electric		Yes
horsepower-metric		Yes
lusec		No	Power unit common in measuring the performance of pumps.
poncelet		No
watt	W	Yes

Pressure

Mass . Length[-1] . Time[-2]

Also known as:Energy Density/Mechanical Stress

Unit	Abbreviation	Prefixes
atmosphere	atm	Yes
bar		Yes
barye		Yes
centimeters-of-mercury	cmHg	Yes
centimeters-of-water	cmH2O	No
feet-of-water		No
inches-of-mercury	inHg	No
inches-of-water		No
millimeters-of-mercury	mmHg	No
millimeters-of-water	mmH2O	No
pascal	Pa	Yes
pound-per-square-inch	psi	Yes
technical-atmosphere	at	Yes
torr		Yes

Solid Angle

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
steradian	sr	Yes

Specific Heat Capacity

Length[2] . Temperature[-1] . Time[-2]

Dimension has no declared units of its own

Specific Volume

Length[3] . Mass[-1]

Dimension has no declared units of its own

Substance

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
mole	mol	Yes

Subtance Concentration

Substance . Length[-3]

Unit	Abbreviation	Prefixes	Notes
molar-concentrate	mol-concentrate	Yes

Surface Tension

Mass . Time[-2]

Dimension has no declared units of its own

Temperature

A fundamental dimension

Unit	Abbreviation	Prefixes
celsius	degC	No
centigrade	degC	No
fahrenheit	degF	No
kelvin	K	No
rankine	R	Yes
rankine	degR	No
reaumur	Reaumur	No

Thermal Conductivity

Length . Mass . Temperature[-1] . Time[-3]

Dimension has no declared units of its own

Thermal Resistance

Time[3] . Temperature . Mass[-1] . Length[-2]

Dimension has no declared units of its own

Time

A fundamental dimension

Unit	Abbreviation	Prefixes	Notes
atomic-unit-of-time		Yes
day		No
fortnight		No	A fortnight is two weeks
hour	hr	No
jiffy		Yes	Jiffies are a little informal and there are numerous definitions
lunation		No	Lunar month, approximate. For true astronomical calculations use dedicated software.
minute	min	No
second	s	Yes
shake		Yes
sigma		Yes
svedberg		Yes
week		No
year	yr	No	Years are converted in seconds per year rather than by the calendar so 1 year ~= 365.26 days.

Velocity

Length . Time[-1]

Also known as:Speed

Unit	Abbreviation	Prefixes	Notes
kilometer-per-hour	kph	No
knot	kn	No	Sometimes also abbreviated as kt but also is kilotonne, so we stick with kn
knot	kts	No
knot-admiralty		No
mach		No	This is mach as defined by the speed of sound in air at a fixed temperature,pressure and humidity
meter-per-second		No
mile-per-hour	mph	No
noeud		No	French, same as a knot

Volume

Length[3]

Both wet and dry volumes are represented here

Also known as:Capacity/Dry Volume/Wet Volume

Unit	Abbreviation	Prefixes	Notes
acre-foot		No	US survey standard, usually used for measuring water in agriculture
acre-inch		No
almude		No	Spanish and Portugese measure
bag		No	Imperial mesaure, same as an Imperial sack
barrel	bl	No	US standard, repeated as barrel-us
barrel-imp	bl-imp	No	Imperial standard
barrel-oil	bl-oil	No
barrel-us	bl-us	No	US standard
barrel-us-dry		No
board		No	Do not confuse with length units board-foot
board-foot		No
boiler-horsepower-equivalent-direct-radiation	bhp-EDR	No
breakfast-cup		No	Imperial measure, bigger than an Imperial cup
bucket		No	Imperial measure
bushel	bu	No	US standard, dry and level
bushel-imp		No	Imperial standard
bushel-us		No	US standard, dry and level
bushel-us-heaped		No	US standard, dry and heaped
butcher		No	Australian drinks measure
butt		No	Usually a wine measure
cord		No	Do not confuse this with 'cord-firewood' a volume unit, 1 cord = 192 board
cuartillos		No	Spanish measure
cubic-centimeter	cc	No
cubic-foot	ccf	No
cup		No
cup-imp		No	Imperial or Canadian cup measure
cup-metric		No	Quarter of a liter
cup-us		No
dash		No	US standard
dash-imp		No
dash-us		No
dessertspoon		No	Imperial measure, 2 imperial teaspoons
dram-fluid		No	US standard = 1/8 of a fluid ounce
drop		No	There is an alternative definition for a US drop, this is 1/360 US floz.
drop-imp		No
drop-medical		No
drop-metric		No
drop-us		No
fanega		No	Spanish measure, do not confuse with similar area measure
fatt		No
fillette		Yes	Half bottle of Champagne
firkin		No
flagon		No	Usually a drinks measure
fluid-dracham	fldr	No	Imperial unit
fluid-ounce	floz	No
fluid-ounce-imp		No	Imperial fluid ounce
fluid-ounce-us		No
fluid-scruple	fls	No	Imperial unit
fluidram		No	Same as a dram fluid
gallon	gal	No
gallon-imp		No
gallon-us		No
gallon-us-dry		No
gallon-us-dry		No
galopin		No	French drinks measure
garnets		No	Russian
gill		No	US gill 4 US fluid ounces
gill-imp		No
gill-us		No	US gill 4 US fluid ounces
hogshead	hhd	No
hogshead-imp		No	Basically two Imperial barrels
hogshead-us		No
jigger		No
kilderkin		No
lambda		Yes
last		No	Imperial mesaure
liter	L	Yes
meter-cubed		No
minim		No	US standard
minim-imp		No
minim-us		No
nebuchadnezzar		No	Large wine measure
nip		No	English drinks measure
nip-us		No	US drinks measure
noggin		No
peck	pk	No	US standard, a dry measure
peck-imp		No
peck-us		No	A dry measure
pinch		No	US standard
pinch-imp		No
pinch-us		No
pint	pt.	No	Fluid Pint, dry print is pint-us-dry
pint-dry		No	Same as pint-us-dry
pint-imp		No
pint-us		No
pint-us-dry		No
pipe		No
pony		No
pottle		No
quart	qt.	No
quart-imp		No
quart-us		No
quart-us-dry		No
quarten		No
sack		No
sack-imp		No
sack-us		No
shot		No
strike		No
strike-imp		No
strike-us		No
stubbie		No	Australian drinks measure
super-foot		No	Australian equivalent to a board-foot
tablespoon	Tsp	No	US standard
tablespoon-canada		No	Canadian tablespoon measure slightly smaller than US tablespoon
tablespoon-imp	Tsp-imp	No	The Imperial measure
tablespoon-metric		No
tablespoon-us	Tsp-us	No	US standard
teaspoon	tsp	No	US standard
teaspoon-imp		No
teaspoon-metric		No
teaspoon-us		No
tumblerful		No	Same as a breakfast-cup
tun		No	252 US gallons = 1 tun = 210 imperial gallons : http://en.wikipedia.org/wiki/Tun_(unit)
wey		No	US mesaure

Did you know...

The unit of electric current, the ampere, is named for André-Marie Ampère, a French scientist who lived in the 19th century. Like many early scientific contributions, Ampère's Law has been reduced and restated to be more succinct and is therefore less involved with the nature of the apparatus and technique he employed to discover it.

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