
;       AutoCAD unit definition file -- ACAD.UNT
;       Version 1.2 for Release 12 (6/15/92)

;       Basic SI units

*meter(s),metre(s),m
-1,0,1,0,-1,4.1214856408e11,0
*kilogram(s),kg
0,0,0,0,1,1.0977481015e30,0
*second(s),sec
-2,0,1,0,-1,1.235590484e20,0
*ampere(s),amp(s)
2,1,-1,0,1,0.050513907838,0
*kelvin,k
2,0,0,-1,1,1.6863043358e-10,0
*candela,cd
4,0,-1,0,2,9.885226216e-8,0

;       Derived SI units

*celsius,centigrade,c
2,0,0,-1,1,1.6863043358e-10,4.6061402932e-8
*rankine
2,0,0,-1,1,9.3683574212e-11,0
*fahrenheit
2,0,0,-1,1,9.3683574212e-11,4.30635285578e-8
*gram(s),gm,g
=kg 0.001
*newton(s),n
=meter kilogram / second^2
*pascal,pa
=newton/meter^2
*joule(s)
=newton meter

;       Exponent synonyms

*square,sq
^2
*cubic,cu
^3

;       Units of time

*centur(y.ies)
=100 year
*day(s)
=86400 second
*decade(s)
=10 year
*fortnight(s)
=14 day
*hour(s),hr
=3600 second
*milleni(um.a)
=1000 year
*minute(s),min
=60 second
*sidereal_year(s)
=365.25636 day
*tropical_year(s)
=365.24220 day
*week(s),wk
=604800 second
*year(s),yr
=365 day

;       Units of length

*Angstrom(s)
=meter 1E-10
*astronomical_unit(s),au       
=meter 149597870000       
*bolt(s)
=meter 36.576
*cable(s)                     ; U.S. cable length
=meter 219.456
*caliber
=meter 0.000254
*centimeter(s),centimetre(s),cm(s)
=meter 0.01
*chain(s)                     ; Gunther's chain length
=meter 20.1168
*cubit(s)
=meter 0.4572
*decimeter(s),decimetre(s),dm
=meter 0.1
*dekameter(s),dekametre(s),dam
=meter 10
*fathom(s),fath
=meter 1.8288
*f(oot.eet),ft,'
=meter 0.3048
*furlong(s),fur
=meter 201.168
*gigameter(s),gigametre(s)
=meter 1E9
*hand(s)
=meter 0.1016
*hectometer(s),hectometre(s),hm
=meter 100
*inch(es),in(s),"
=meter 2.54E-2
*kilometer(s),kilometre(s),km
=meter 1000
*league_nautical
=meter 5556
*league_statute
=meter 4828.032
*light_year(s)
=meter 9.46053E15
*link(s)                      ; Gunther's link length
=meter 0.201168
*micron(s)
=meter 1E-6
*mil(s)
=meter 2.54E-5
*mile_nautical,inm            ; International Nautical Mile
=meter 1852
*mile_statute,mile(s),mi
=meter 1609.344
*millimeter(s),millimetre(s),mm(s)
=meter 0.001
*millimicron(s)
=meter 1E-9
*pace(s)
=meter 0.762
*palm(s)
=meter 0.0762
*parsec(s)
=meter 3.085677E16
*perch(es)
=meter 5.0292
*pica(s)
=meter 0.0042175176
*point(s)
=meter 0.0003514598
*rod(s),pole(s)
=meter 5.0292
*rope(s)
=meter 6.096
*skein(s)
=meter 109.728
*span(s)
=meter 0.2286
*survey_f(oot.eet)
=0.3048006096 meter
*yard(s),yd
=meter 0.9144

;       Units of area

*acre(s)
=4046.85642 meter^2
*are(s)
=100 meter^2
*barn(s)
=1.0E-28 meter^2
*centare(s)
=1 meter^2
*hectare(s)
=10000 meter^2
*rood(s)
=1011.7141 meter^2
*section(s)
=2589988.096 meter^2
*township(s)
=93239571.456 meter^2

;       Units of volume

*barrel(s),bbl                ; International Petroleum barrel
=0.1589873 meter^3
*board_f(oot.eet),fbm
=144 inch^3
*bushel(s),bu                 ; U.S. dry bushel
=0.03523907 meter^3
*centiliter(s),cl
=0.01 liter
*cord(s)
=3.6245734 meter^3
*cc
=1e-6 meter^3
*decistere(s)
=0.1 meter^3
*dekaliter(s),dal
=10 liter
*dekastere(s)
=10 meter^3
*dram(s)                      ; U.S. fluid dram
=3.6967162 cc
*dry_pint(s)
=0.551 liter
*dry_quart(s)
=1.101 liter
*firkin(s)
=34.06775 liter
*gallon(s),gal                ; U.S. fluid gallon
=0.0037854118 meter^3
*gill(s)
=118.29412 cc
*hectoliter(s)
=100 liter
*hogshead(s),hhd
=0.23848094 meter^3
*kilderkin(s)
=0.08182957 meter^3
*kiloliter(s)
=1.000028 meter^3
*liter(s)
=0.001 meter^3                ; Redefined from 0.001000028m^3 in 1964
*milliliter(s),ml
=0.001 liter
*minim(s)
=6.160979e-5 liter
*fluid_ounce(s)
=2.9573730e-5 meter^3
*peck(s)
=8.809521 liter
*pint(s),fluid_pint(s)
=0.4731632 liter
*pottle(s)
=2.272980 liter
*puncheon(s)
=0.31797510 meter^3
*quart(s),qt,fluid_quart(s)
=0.9463264 liter
*register_ton(s)
=2.8316847 meter^3
*seam(s)
=290.9414 liter
*stere(s)
=1 meter^3
*tun(s)
=252 gallon

;       Units of mass

*dalton(s)
=1.66053e-27 kg
*dyne(s)
=kg/980665
*grain(s)
=kg/15432.358
*hundredweight(s),cwt
=45.359337 kg
*long_ton(s)
=1016.0469088 kg
*ounce_weight,ounce(s),oz
=kg/35.273962
*ounce_troy
=kg/32.150737
*pennyweight(s),dwt,pwt
=kg/643.01493
*poundal(s)
=kg/70.931635
*pound(s),lb
=0.45359237 kg
*scruple(s)
=kg/771.61792
*slug(s)
=14.5939 kg
*stone
=14 pound
*ton(s)
=907.18474 kg
*tonn(e.es)
=1000 kg

;       Units of frequency

*hertz,hz
=1/second

;       Electromagnetic units

*coulomb(s)
=ampere second
*farad(s)
=coulomb/volt
*henr(y.ies)
=ohm second
*ohm(s)
=volt/ampere
*siemens
=1/ohm
*tesla(s)
=weber/meter^2
*volt(s),v
=watt/ampere
*watt(s),w
=joule/second
*weber(s)
=volt second

;       Circular measure

*circle(s)
0,0,0,0,0,1,0
*radian(s)
=circle/6.28318530717958648
*degree(s)
=circle/360
*grad(s)
=circle/400
*quadrant(s)
=circle/4

;       Solid measure

*sphere(s)
0,0,0,0,0,1,0
*hemisphere(s)
=sphere/2
*steradian(s)
=sphere/12.566371

;       Dimensionless prefixes

;          Multiples
*deca
0,0,0,0,0,10,0
*hecto
0,0,0,0,0,100,0
*kilo
0,0,0,0,0,1000,0
*mega
0,0,0,0,0,1e6,0
*giga
0,0,0,0,0,1e9,0
*tera
0,0,0,0,0,1e12,0
*peta
0,0,0,0,0,1e15,0
*exa
0,0,0,0,0,1e18,0

;          Fractions
*deci
0,0,0,0,0,0.1,0
*centi
0,0,0,0,0,0,0.01,0
*milli
0,0,0,0,0,0.001,0
*micro
0,0,0,0,0,1e-6,0
*nano
0,0,0,0,0,1e-9,0
*pico
0,0,0,0,0,1e-12,0
*femto
0,0,0,0,0,1e-15,0
*atto
0,0,0,0,0,1e-18,0

;       Reference:  CRC Handbook, 68th edition ('87-'88).

;       Dimensions of common units in terms of fundamental constants

;       Measurement             C   E   H   K   M          Notes

;       Length                 -1       1      -1 
;       Mass                                    1
;       Time                   -2       1      -1          time / C
;       Current                 2   1  -1       1          E / time
;       Temperature             2           -1  1          H / (K time)
;       Luminous intensity      4      -1       2          Units of power over
;                                                          solid angle, a
;                                                          dimensionless value.
