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  1.  
  2. ;       AutoCAD unit definition file -- ACAD.UNT
  3.  
  4. ;       Basic SI units
  5.  
  6. *meter(s),metre(s),m
  7. -1,0,1,0,-1,4.1214856408e11,0
  8. *kilogram(s),kg
  9. 0,0,0,1,0,1.0977481015e30,0
  10. *second(s),sec
  11. -2,0,1,0,-1,1.235590484e20,0
  12. *ampere(s),amp(s)
  13. 2,1,-1,0,1,0.050513907838,0
  14. *kelvin,k
  15. 2,0,0,-1,1,1.6863043358e-10,0
  16. *candela,cd
  17. 4,0,-1,0,2,9.885226216e-8,0
  18.  
  19. ;       Derived SI units
  20.  
  21. *celsius,centigrade,c
  22. 2,0,0,-1,1,1.6863043358e-10,4.6061402932e-8
  23. *rankine
  24. 2,0,0,-1,1,9.3683574212e-11,0
  25. *fahrenheit
  26. 2,0,0,-1,1,9.3683574212e-11,4.30635285578e-8
  27. *gram(s),gm,g
  28. =kg 0.001
  29. *newton(s),n
  30. =meter kilogram / second^2
  31. *pascal,pa
  32. =newton/meter^2
  33. *joule(s)
  34. =newton meter
  35.  
  36. ;       Exponent synonyms
  37.  
  38. *square,sq
  39. ^2
  40. *cubic,cu
  41. ^3
  42.  
  43. ;       Units of time
  44.  
  45. *centur(y.ies)
  46. =100 year
  47. *day(s)
  48. =86400 second
  49. *decade(s)
  50. =10 year
  51. *fortnight(s)
  52. =14 day
  53. *hour(s),hr
  54. =3600 second
  55. *milleni(um.a)
  56. =1000 year
  57. *minute(s),min
  58. =60 second
  59. *sidereal_year(s)
  60. =365.25636 day
  61. *tropical_year(s)
  62. =365.24220 day
  63. *week(s),wk
  64. =604800 second
  65. *year(s),yr
  66. =365 day
  67.  
  68. ;       Units of length
  69.  
  70. *Angstrom(s)
  71. =meter 1E-10
  72. *astronomical_unit(s),au       
  73. =meter 149597870000       
  74. *bolt(s)
  75. =meter 36.576
  76. *cable(s)                     ; U.S. cable length
  77. =meter 219.456
  78. *caliber
  79. =meter 0.000254
  80. *centimeter(s),centimetre(s),cm
  81. =meter 0.01
  82. *chain(s)                     ; Gunther's chain length
  83. =meter 20.1168
  84. *cubit(s)
  85. =meter 0.4572
  86. *decimeter(s),decimetre(s),dm
  87. =meter 0.1
  88. *dekameter(s),dekametre(s),dam
  89. =meter 10
  90. *fathom(s),fath
  91. =meter 1.8288
  92. *f(oot.eet),ft,'
  93. =meter 0.3048
  94. *furlong(s),fur
  95. =meter 201.168
  96. *gigameter(s),gigametre(s)
  97. =meter 1E9
  98. *hand(s)
  99. =meter 0.1016
  100. *hectometer(s),hectometre(s),hm
  101. =meter 100
  102. *inch(es),in,"
  103. =meter 2.54E-2
  104. *kilometer(s),kilometre(s),km
  105. =meter 1000
  106. *league_nautical
  107. =meter 5556
  108. *league_statute
  109. =meter 4828.032
  110. *light_year(s)
  111. =meter 9.46053E15
  112. *link(s)                      ; Gunther's link length
  113. =meter 0.201168
  114. *micron(s)
  115. =meter 1E-6
  116. *mil(s)
  117. =meter 2.54E-5
  118. *mile_nautical,inm            ; International Nautical Mile
  119. =meter 1852
  120. *mile_statute,mile(s),mi
  121. =meter 1609.344
  122. *millimeter(s),millimetre(s),mm
  123. =meter 0.001
  124. *millimicron(s)
  125. =meter 1E-9
  126. *pace(s)
  127. =meter 0.762
  128. *palm(s)
  129. =meter 0.0762
  130. *parsec(s)
  131. =meter 3.085677E16
  132. *perch(es)
  133. =meter 5.0292
  134. *pica(s)
  135. =meter 0.0042175176
  136. *point(s)
  137. =meter 0.0003514598
  138. *rod(s),pole(s)
  139. =meter 5.0292
  140. *rope(s)
  141. =meter 6.096
  142. *skein(s)
  143. =meter 109.728
  144. *span(s)
  145. =meter 0.2286
  146. *survey_f(oot.eet)
  147. =0.3048006096 meter
  148. *yard(s),yd
  149. =meter 0.9144
  150.  
  151. ;       Units of area
  152.  
  153. *acre(s)
  154. =4046.85642 meter^2
  155. *are(s)
  156. =100 meter^2
  157. *barn(s)
  158. =1.0E-28 meter^2
  159. *centare(s)
  160. =1 meter^2
  161. *hectare(s)
  162. =10000 meter^2
  163. *rood(s)
  164. =1011.7141 meter^2
  165. *section(s)
  166. =2589988.096 meter^2
  167. *township(s)
  168. =93239571.456 meter^2
  169.  
  170. ;       Units of volume
  171.  
  172. *barrel(s),bbl                ; International Petroleum barrel
  173. =0.1589873 meter^3
  174. *board_f(oot.eet),fbm
  175. =144 inch^3
  176. *bushel(s),bu                 ; U.S. dry bushel
  177. =0.03523907 meter^3
  178. *centiliter(s),cl
  179. =0.01 liter
  180. *cord(s)
  181. =3.6245734 meter^3
  182. *cc
  183. =1e-6 meter^3
  184. *decistere(s)
  185. =0.1 meter^3
  186. *dekaliter(s),dal
  187. =10 liter
  188. *dekastere(s)
  189. =10 meter^3
  190. *dram(s)                      ; U.S. fluid dram
  191. =3.6967162 cc
  192. *dry_pint(s)
  193. =0.551 liter
  194. *dry_quart(s)
  195. =1.101 liter
  196. *firkin(s)
  197. =34.06775 liter
  198. *gallon(s),gal                ; U.S. fluid gallon
  199. =0.0037854118 meter^3
  200. *gill(s)
  201. =118.29412 cc
  202. *hectoliter(s)
  203. =100 liter
  204. *hogshead(s),hhd
  205. =0.23848094 meter^3
  206. *kilderkin(s)
  207. =0.08182957 meter^3
  208. *kiloliter(s)
  209. =1.000028 meter^3
  210. *liter(s)
  211. =0.001 meter^3                ; Redefined from 0.001000028m^3 in 1964
  212. *milliliter(s),ml
  213. =0.001 liter
  214. *minim(s)
  215. =6.160979e-5 liter
  216. *fluid_ounce(s)
  217. =2.9573730e-5 meter^3
  218. *peck(s)
  219. =8.809521 liter
  220. *pint(s),fluid_pint(s)
  221. =0.4731632 liter
  222. *pottle(s)
  223. =2.272980 liter
  224. *puncheon(s)
  225. =0.31797510 meter^3
  226. *quart(s),qt,fluid_quart(s)
  227. =0.9463264 liter
  228. *register_ton(s)
  229. =2.8316847 meter^3
  230. *seam(s)
  231. =290.9414 liter
  232. *stere(s)
  233. =1 meter^3
  234. *tun(s)
  235. =252 gallon
  236.  
  237. ;       Units of mass
  238.  
  239. *dalton(s)
  240. =1.66053e-27 kg
  241. *dyne(s)
  242. =kg/980665
  243. *grain(s)
  244. =kg/15432.358
  245. *hundredweight(s),cwt
  246. =45.359337 kg
  247. *long_ton(s)
  248. =1016.0469088 kg
  249. *ounce_weight,ounce(s),oz
  250. =kg/35.273962
  251. *ounce_troy
  252. =kg/32.150737
  253. *pennyweight(s),dwt,pwt
  254. =kg/643.01493
  255. *poundal(s)
  256. =kg/70.931635
  257. *pound(s),lb
  258. =0.45359237 kg
  259. *scruple(s)
  260. =kg/771.61792
  261. *slug(s)
  262. =14.5939 kg
  263. *stone
  264. =14 pound
  265. *ton(s)
  266. =907.18474 kg
  267. *tonn(e.es)
  268. =1000 kg
  269.  
  270. ;       Units of frequency
  271.  
  272. *hertz,hz
  273. =1/second
  274.  
  275. ;       Electromagnetic units
  276.  
  277. *coulomb(s)
  278. =ampere second
  279. *farad(s)
  280. =coulomb/volt
  281. *henr(y.ies)
  282. =ohm second
  283. *ohm(s)
  284. =volt/ampere
  285. *siemens
  286. =1/ohm
  287. *tesla(s)
  288. =weber/meter^2
  289. *volt(s),v
  290. =watt/ampere
  291. *watt(s),w
  292. =joule/second
  293. *weber(s)
  294. =volt second
  295.  
  296. ;       Circular measure
  297.  
  298. *circle(s)
  299. 0,0,0,0,0,1,0
  300. *radian(s)
  301. =circle/6.28318530717958648
  302. *degree(s)
  303. =circle/360
  304. *grad(s)
  305. =circle/400
  306. *quadrant(s)
  307. =circle/4
  308.  
  309. ;       Solid measure
  310.  
  311. *sphere(s)
  312. 0,0,0,0,0,1,0
  313. *hemisphere(s)
  314. =sphere/2
  315. *steradian(s)
  316. =sphere/12.566371
  317.  
  318. ;       Dimensionless prefixes
  319.  
  320. ;          Multiples
  321. *deca
  322. 0,0,0,0,0,10,0
  323. *hecto
  324. 0,0,0,0,0,100,0
  325. *kilo
  326. 0,0,0,0,0,1000,0
  327. *mega
  328. 0,0,0,0,0,10e6,0
  329. *giga
  330. 0,0,0,0,0,10e9,0
  331. *tera
  332. 0,0,0,0,0,10e12,0
  333. *peta
  334. 0,0,0,0,0,10e15,0
  335. *exa
  336. 0,0,0,0,0,10e18,0
  337.  
  338. ;          Fractions
  339. *deci
  340. 0,0,0,0,0,0.1,0
  341. *centi
  342. 0,0,0,0,0,0,0.01,0
  343. *milli
  344. 0,0,0,0,0,0.001,0
  345. *micro
  346. 0,0,0,0,0,1e-6,0
  347. *nano
  348. 0,0,0,0,0,1e-9,0
  349. *pico
  350. 0,0,0,0,0,1e-12,0
  351. *femto
  352. 0,0,0,0,0,1e-15,0
  353. *atto
  354. 0,0,0,0,0,1e-18,0
  355.  
  356. ;       Reference:  CRC Handbook, 68th edition ('87-'88).
  357.  
  358. ;       Dimensions of common units in terms of fundamental constants
  359.  
  360. ;       Measurement             C   E   H   K   M          Notes
  361.  
  362. ;       Length                 -1       1      -1 
  363. ;       Mass                                    1
  364. ;       Time                   -2       1      -1          time / C
  365. ;       Current                 2   1  -1       1          E / time
  366. ;       Temperature             2           -1  1          H / (K time)
  367. ;       Luminous intensity      4      -1       2          Units of power over
  368. ;                                                          solid angle, a
  369. ;                                                          dimensionless value.
  370.