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1.15 ! jmc 1: / $OpenBSD: units.lib,v 1.14 2011/09/30 16:34:20 jmc Exp $
1.2 deraadt 2: / $NetBSD: units.lib,v 1.3 1996/04/06 06:01:04 thorpej Exp $
1.1 deraadt 3:
4: / primitive units
5:
6: m !a!
7: kg !b!
8: sec !c!
9: coul !d!
10: candela !e!
11: dollar !f!
12: bit !h!
13: erlang !i!
14: K !j!
15:
16: / prefixes
17:
18: yotta- 1e24
19: zetta- 1e21
20: exa- 1e18
21: peta- 1e15
22: tera- 1e12
23: giga- 1e9
24: mega- 1e6
25: myria- 1e4
26: kilo- 1e3
27: hecto- 1e2
28: deka- 1e1
1.6 pjanzen 29: deca- deka
1.1 deraadt 30: deci- 1e-1
31: centi- 1e-2
32: milli- 1e-3
33: micro- 1e-6
34: nano- 1e-9
35: pico- 1e-12
36: femto- 1e-15
37: atto- 1e-18
38: zopto- 1e-21
1.6 pjanzen 39: zepto- zopto
1.1 deraadt 40: yocto- 1e-24
41:
42: semi- .5
43: demi- .5
44:
45: Y- yotta
46: Z- zetta
47: E- exa
48: P- peta
49: T- tera
50: G- giga
51: M- mega
52: k- kilo
53: h- hecto
54: da- deka
55: d- deci
56: c- centi
57: m- milli
58: p- pico
1.4 pjanzen 59: n- nano
1.1 deraadt 60: f- femto
61: a- atto
62: z- zopto
63: y- yocto
64:
65: / constants
66:
67: fuzz 1
68: pi 3.14159265358979323846
1.4 pjanzen 69: c 2.99792458e+8 m/sec
1.1 deraadt 70: g 9.80665 m/sec2
1.7 pjanzen 71: bigG 6.67390e-11 m3/kg/s2
1.4 pjanzen 72: AU 1.49597870e+11 m fuzz
73: au AU
74: mole 6.0221367e+23 fuzz
75: e 1.60217733e-19 coul fuzz
76: / Next two to be multiplied by mass
1.1 deraadt 77: energy c2
78: force g
1.4 pjanzen 79: mercury 1.3332239e+5 kg/m2-sec2
1.1 deraadt 80: hg mercury
1.4 pjanzen 81: mmHg 0.001 m hg
82:
83: mu 4.e-7 pi-N/A2
84: epsilon 1.0 /mu/c2
85: alpha 0.5 mu-c-e2/planck
86: planck 6.6260755e-34 joule-sec
87: hbar 0.5 planck/pi
88: electronmass 9.1093897e-31 kg
89: protonmass 1.6726231e-27 kg
90: neutronmass 1.6749286e-27 kg
91:
1.1 deraadt 92:
93: / dimensionless
94:
95: radian .5 / pi
96: degree 1|180 pi-radian
97: circle 2 pi-radian
98: turn 2 pi-radian
1.4 pjanzen 99: revolution turn
1.1 deraadt 100: rev turn
101: grade .9 degree
102: arcdeg 1 degree
103: arcmin 1|60 arcdeg
104: ccs 1|36 erlang
105: arcsec 1|60 arcmin
106:
107: steradian radian2
108: sphere 4 pi-steradian
109: sr steradian
110:
111: / Time
112:
113: second sec
114: s sec
115: minute 60 sec
116: min minute
117: hour 60 min
118: hr hour
119: day 24 hr
120: da day
121: week 7 day
1.4 pjanzen 122: year 3.15569259747e7 sec fuzz
1.1 deraadt 123: yr year
124: month 1|12 year
125: ms millisec
126: us microsec
127:
128: / Mass
129:
130: gram millikg
131: gm gram
132: mg milligram
133: metricton kilokg
134:
135: / Avoirdupois
136:
137: lb .45359237 kg
138: pound lb
139: lbf lb g
140: ounce 1|16 lb
141: oz ounce
142: dram 1|16 oz
143: dr dram
144: grain 1|7000 lb
145: gr grain
146: shortton 2000 lb
147: ton shortton
148: longton 2240 lb
149:
150: / Apothecary
151:
152: scruple 20 grain
153: apdram 60 grain
154: apounce 480 grain
155: appound 5760 grain
156: troypound appound
157:
158: / Length
159:
160: meter m
161: micron micrometer
162: angstrom decinanometer
1.4 pjanzen 163: ao 0.25 alpha/pi/rydbergconst
1.1 deraadt 164:
165: inch 2.54 cm
166: in inch
167: foot 12 in
168: feet foot
169: ft foot
170: yard 3 ft
171: yd yard
172: rod 5.5 yd
173: rd rod
174: mile 5280 ft
175: mi mile
176:
177: british 1200|3937 m/ft
1.4 pjanzen 178: / Assume we do not want the prefix n- with mile
1.1 deraadt 179: nmile 1852 m
180:
181: acre 4840 yd2
1.12 tedu 182:
183: ox acre/day
1.1 deraadt 184:
185: cc cm3
186: liter kilocc
187: ml milliliter
188:
189: / US Liquid
190:
191: gallon 231 in3
192: imperial 1.20095
193: gal gallon
194: quart 1|4 gal
195: qt quart
196: pint 1|2 qt
197: pt pint
198:
199: floz 1|16 pt
200: fldr 1|8 floz
201:
202: / US Dry
203:
204: dry 268.8025 in3/gallon fuzz
205: peck 8 dry-quart
206: pk peck
207: bushel 4 peck
208: bu bushel
209: chaldron 36 bushel
210:
211: / British
212:
213: brgallon 277.420 in3 fuzz
214: brquart 1|4 brgallon
215: brpint 1|2 brquart
216: brfloz 1|20 brpint
217: brpeck 554.84 in3 fuzz
218: brbushel 4 brpeck
219:
1.11 mickey 220: / Russian
221: berkovets 10 pood
222: pood 40 funt
223: funt 0.40951 kg
224: lot 1|32 funt
225: zolotnik 1|3 lot
226: dolya 1|96 zolotnik
227: rumile 7 verst
228: mezhevayaverst 2 verst
229: verst 1066.8 m
230: sazhen 1|500 verst
231: kosayasazhen 1|430.2 verst
232: arshin 1|1500 verst
233: / is not exactly defined
234: ruell 16.54 in
235: liniya 1|10 in
236: vershok 1.75 in
237: pyad 7 in
238: vedro 12.3 liter
239: shtoff 1|10 vedro
240: vinebottle 1|16 vedro
241: vodkabottle 1|20 vedro
242: charka 1|100 vedro
243: shkalik 1|200 vedro
244: desyatina_state 109.3 are
245: desyatina_farmery 0.75 desyatina_state
246: sqverst 104.2 desyatina_state
247: sqarshin 1|21600 desyatina_state
248: sqfoot 1|117600 desyatina_state
249:
250:
1.1 deraadt 251: / Energy Work
252:
253: newton kg-m/sec2
254: nt newton
255: N newton
256: joule nt-m
1.4 pjanzen 257: J joule
1.1 deraadt 258: cal 4.1868 joule
259:
260: / Electrical
261:
262: coulomb coul
263: C coul
264: ampere coul/sec
265: amp ampere
1.4 pjanzen 266: A amp
1.1 deraadt 267: watt joule/sec
1.4 pjanzen 268: W watt
1.1 deraadt 269: volt watt/amp
270: ohm volt/amp
271: mho /ohm
272: farad coul/volt
1.4 pjanzen 273: F farad
1.1 deraadt 274: henry sec2/farad
1.4 pjanzen 275: H henry
1.1 deraadt 276: weber volt-sec
1.4 pjanzen 277: Wb weber
1.1 deraadt 278:
279: / Light
280:
281: cd candela
282: lumen cd sr
283: lux cd sr/m2
284:
1.10 pjanzen 285: / http://www.federalreserve.gov/releases/h10/update/ as of May 30, 2002
286: / with rounding
1.1 deraadt 287:
288: $ dollar
1.10 pjanzen 289: australiadollar .5645 $
290: brazilreal .3981 $
291: canadadollar .652 $
1.13 jmc 292: chinayuan .1208 $
1.10 pjanzen 293: denmarkkrone .126 $
1.13 jmc 294: euro 0.937 $
1.1 deraadt 295: hongkongdollar .13 $
1.10 pjanzen 296: indiarupee .0204 $
297: japanyen .0081 $
298: malaysiaringgit .263 $
299: mexicopeso .103 $
300: newzealanddollar .477 $
301: norwaykrone .126 $
302: singaporedollar .560 $
303: southafricarand .103 $
304: southkoreawon .00082 $
305: srilankarupee .0104 $
306: swedenkrona .1029 $
307: switzerlandfranc .64 $
308: taiwandollar .0294 $
309: thailandbaht .02357 $
1.13 jmc 310: unitedkingdompound 1.4655 $
1.10 pjanzen 311: venezuelabolivar .00086 $
312:
313: / Wall Street Journal, May 30 2002
314:
315: / argentinapeso $ XXX not stable
316: bahraindinar 2.6525 $
317: chilepeso .0015 $
318: colombiapeso .000430 $
319: czechkoruna .0306 $
320: hungaryforint .00384 $
321: indonesiarupiah .000113 $
322: israelshekel .202 $
1.4 pjanzen 323: jordandinar 1.41 $
1.10 pjanzen 324: kuwaitdinar 3.28 $
325: lebanonpound .000661 $
326: maltalira 2.28 $
327: pakistanrupee .0167 $
328: perunewsol .288 $
329: philippinespeso .0200 $
330: polandzloty .248 $
1.4 pjanzen 331: saudiarabiariyal .2666 $
1.10 pjanzen 332: slovakkoruna .0214 $
333: turkeylira .00000070 $
1.1 deraadt 334: unitedarabdirham .2723 $
1.10 pjanzen 335: uruguaypeso .0599 $
1.5 pjanzen 336:
337: / EMU currencies have constant exchange rate against Euro since 1.1.1999
338: austriaschilling 1|13.7603 euro
339: belgiumfranc 1|40.3399 euro
340: finlandmarkka 1|5.94573 euro
341: francefranc 1|6.55957 euro
342: germanymark 1|1.95583 euro
1.10 pjanzen 343: greecedrachma 1|340.750 euro
1.5 pjanzen 344: irelandpunt 1|0.787564 euro
345: italylira 1|1936.27 euro
1.10 pjanzen 346: luxembourgfranc 1|40.3399 euro
1.6 pjanzen 347: netherlandsguilder 1|2.20371 euro
1.5 pjanzen 348: portugalescudo 1|200.482 euro
349: spainpeseta 1|166.386 euro
1.1 deraadt 350:
1.14 jmc 351: chinarenminbi chinayuan
352: sucre ecuadorsucre
353: markka finlandmarkka
354: franc francefranc
1.1 deraadt 355: mark germanymark
1.14 jmc 356: drachma greecedrachma
357: rupee indiarupee
358: lira italylira
359: yen japanyen
360: peso mexicopeso
1.1 deraadt 361: guilder netherlandsguilder
362: hollandguilder netherlandsguilder
1.14 jmc 363: sol perusol
364: escudo portugalescudo
365: rand southafricarand
366: peseta spainpeseta
1.13 jmc 367: poundsterling unitedkingdompound
368: greatbritainpound unitedkingdompound
369: britainpound unitedkingdompound
1.14 jmc 370: bolivar venezuelabolivar
1.1 deraadt 371:
1.6 pjanzen 372: / ISO 4217 and then some
373: AED unitedarabdirham
374: ARP argentinapeso
375: ATS austriaschilling
376: AUD australiadollar
377: BEF belgiumfranc
1.15 ! jmc 378: BRL brazilreal
1.6 pjanzen 379: CAD canadadollar
380: CHF switzerlandfranc
381: CLP chilepeso
1.15 ! jmc 382: CNY chinayuan
1.6 pjanzen 383: COP colombiapeso
384: CSK czechkoruna
385: DEM germanymark
386: DKK denmarkkrone
387: ECS ecuadorsucre
388: EUR euro
389: FIM finlandmarkka
390: FRF francefranc
1.15 ! jmc 391: GBP unitedkingdompound
1.6 pjanzen 392: GRD greecedrachma
393: HKD hongkongdollar
394: HUF hungaryforint
395: IDR indonesiarupiah
396: INR indiarupee
397: ILS israelshekel
398: ITL italylira
399: JOD jordandinar
400: JPY japanyen
401: KRW southkoreawon
402: KWD kuwaitdinar
403: LBP lebanonpound
1.15 ! jmc 404: LKR srilankarupee
1.6 pjanzen 405: MTL maltalira
1.15 ! jmc 406: MXN mexicopeso
1.6 pjanzen 407: MYR malaysiaringgit
408: NLG netherlandsguilder
409: NOK norwaykrone
410: NZD newzealanddollar
411: PEN perunewsol
412: PHP philippinespeso
413: PKR pakistanrupee
414: PLZ polandzloty
415: SAR saudiarabiariyal
416: SEK swedenkrona
417: SGD singaporedollar
418: THB thailandbaht
419: TRL turkeylira
420: TWD taiwandollar
421: USD dollar
1.15 ! jmc 422: VEF venezuelabolivar
1.6 pjanzen 423: ZAR southafricarand
424:
1.1 deraadt 425: / computer
426:
427: baud bit/sec
428: byte 8 bit
1.6 pjanzen 429: / Not necessarily true on all systems!
430: word 2 byte
1.1 deraadt 431: block 512 byte
432: kbyte 1024 byte
433: megabyte 1024 kbyte
434: gigabyte 1024 megabyte
435: meg megabyte
436:
437: / Trivia
438:
439: % 1|100
1.4 pjanzen 440: abampere 10 ampere
1.1 deraadt 441: admiraltyknot 6080 ft/hr
442: apostilb cd/pi-m2
1.4 pjanzen 443: asb apostilb
1.1 deraadt 444: are 1e+2 m2
445: arpentcan 27.52 mi
446: arpentlin 191.835 ft
1.4 pjanzen 447: astronomicalunit AU
1.1 deraadt 448: atmosphere 1.01325e+5 nt/m2
449: atm atmosphere
1.4 pjanzen 450: atomicmassunit 1.6605402e-27 kg fuzz
1.1 deraadt 451: amu atomicmassunit
452: bag 94 lb
453: bakersdozen 13
454: bar 1e+5 nt/m2
455: barie 1e-1 nt/m2
456: barleycorn 1|3 in
457: barn 1e-28 m2
1.6 pjanzen 458: / oil barrel, nothing else
1.1 deraadt 459: barrel 42 gal
460: barye 1e-1 nt/m2
1.4 pjanzen 461: baryl microbar
1.1 deraadt 462: bev 1e+9 e-volt
463: biot 10 amp
464: blondel cd/pi-m2
465: boardfoot 144 in3
1.6 pjanzen 466: / Defn of bolt is also an area, but depends on type of cloth
1.1 deraadt 467: bolt 40 yd
468: bottommeasure 1|40 in
469: britishthermalunit 1.05506e+3 joule fuzz
470: btu britishthermalunit
471: refrigeration 12000 btu/ton-hour
472: buck dollar
473: cable 720 ft
474: caliber 1e-2 in
475: calorie cal
476: carat 205 mg
477: caratgold 1|24
478: cent centidollar
479: cental 100 lb
480: centesimalminute 1e-2 grade
481: centesimalsecond 1e-4 grade
482: century 100 year
483: cfs ft3/sec
484: chain 66 ft
485: circularinch 1|4 pi-in2
486: circularmil 1e-6|4 pi-in2
487: clusec 1e-8 mm-hg m3/s
488: coomb 4 bu
489: cord 128 ft3
490: cordfoot cord
491: crith 9.06e-2 gm
492: cubit 18 in
493: cup 1|2 pt
494: curie 3.7e+10 /sec
495: dalton amu
496: decade 10 yr
497: dipotre /m
498: displacementton 35 ft3
499: doppelzentner 100 kg
500: dozen 12
501: drop .03 cm3
502: dyne cm-gm/sec2
503: electronvolt e-volt
504: ell 45 in
505: engineerschain 100 ft
506: engineerslink 100|100 ft
507: equivalentfootcandle lumen/pi-ft2
508: equivalentlux lumen/pi-m2
509: equivalentphot cd/pi-cm2
510: erg cm2-gm/sec2
511: ev e-volt
1.4 pjanzen 512: faraday 9.6485309e+4 coul
1.1 deraadt 513: fathom 6 ft
514: fermi 1e-15 m
515: fifth 4|5 qt
516: fin 5 dollar
517: finger 7|8 in
518: firkin 9 gal
519: footcandle lumen/ft2
520: footlambert cd/pi-ft2
521: fortnight 14 da
522: franklin 3.33564e-10 coul
523: frigorie kilocal
524: furlong 220 yd
525: galileo 1e-2 m/sec2
526: gamma 1e-9 weber/m2
527: gauss 1e-4 weber/m2
1.4 pjanzen 528: G gauss
1.1 deraadt 529: geodeticfoot british-ft
530: geographicalmile 1852 m
1.4 pjanzen 531: gilbert 2.5 amp/pi
1.1 deraadt 532: gill 1|4 pt
533: gross 144
534: gunterschain 22 yd
535: hand 4 in
1.4 pjanzen 536: hartree 2 rydberg
1.1 deraadt 537: hectare 1e+4 m2
538: hefnercandle .92 cd
539: hertz /sec
540: Hz hertz
541: hogshead 2 barrel
542: hd hogshead
543: homestead 1|4 mi2
1.4 pjanzen 544: / horsepower is not uniquely defined
545: horsepower 735.50 watt
1.1 deraadt 546: hp horsepower
1.6 pjanzen 547: hubble 1e9 ly
1.1 deraadt 548: hyl gm force sec2/m
549: hz /sec
550: imaginarycubicfoot 1.4 ft3
1.6 pjanzen 551: jansky 1e-26 W/m2-Hz
1.1 deraadt 552: jeroboam 4|5 gal
1.6 pjanzen 553: Jy jansky
1.1 deraadt 554: karat 1|24
1.10 pjanzen 555: kayser /cm
1.1 deraadt 556: kcal kilocal
557: kcalorie kilocal
558: key kg
559: kilderkin 18 gal
560: knot nmile/hr
1.4 pjanzen 561: kn knot
1.1 deraadt 562: lambert cd/pi-cm2
1.4 pjanzen 563: Lb lambert
1.1 deraadt 564: langley cal/cm2
565: last 80 bu
566: league 3 mi
567: lightyear c-yr
1.4 pjanzen 568: ly lightyear
1.1 deraadt 569: line 1|12 in
570: link 66|100 ft
571: longhundredweight 112 lb
572: longquarter 28 lb
573: lusec 1e-6 mm-hg m3/s
1.7 pjanzen 574: m_earth 5.97223e24 kg
1.4 pjanzen 575: m_moon 7.34e22 kg
1.7 pjanzen 576: m_sun 1.98843e30 kg
1.1 deraadt 577: mach 331.46 m/sec
578: magnum 2 qt
579: marineleague 3 nmile
580: maxwell 1e-8 weber
1.4 pjanzen 581: Mx maxwell
1.1 deraadt 582: metriccarat 200 mg
583: mgd megagal/day
584: mh millihenry
585: mil 1e-3 in
1.8 deraadt 586: millennium 1000 year
1.1 deraadt 587: minersinch 1.5 ft3/min
588: minim 1|60 fldr
589: mo month
590: mpg mile/gal
591: mph mile/hr
592: nail 1|16 yd
593: nauticalmile nmile
594: nit cd/m2
595: noggin 1|8 qt
596: nox 1e-3 lux
597: ns nanosec
1.4 pjanzen 598: oersted 2.5e+2 amp/m/pi
599: Oe oersted
1.1 deraadt 600: pace 36 in
601: palm 3 in
1.6 pjanzen 602: pair 2
1.1 deraadt 603: parasang 3.5 mi
1.4 pjanzen 604: parsec AU-radian/arcsec
1.1 deraadt 605: pascal nt/m2
1.4 pjanzen 606: Pa pascal
1.1 deraadt 607: pc parsec
608: pennyweight 1|20 oz
609: pwt pennyweight
610: percent %
611: perch rd
612: phot lumen/cm2
613: pica 1|6 in
614: pieze 1e+3 nt/m2
615: pipe 4 barrel
616: point 1|72 in
617: poise gm/cm-sec
1.4 pjanzen 618: P poise
1.1 deraadt 619: pole rd
1.4 pjanzen 620: pond 9.80665e-3 nt
1.1 deraadt 621: poundal ft-lb/sec2
622: pdl poundal
623: proof 1|200
624: psi lb-g/in2
625: quarter 9 in
626: quartersection 1|4 mi2
627: quintal 100 kg
628: quire 25
629: rad 100 erg/gm
630: ream 500
631: registerton 100 ft3
632: rehoboam 156 floz
633: rhe 10 m2/nt-sec
1.4 pjanzen 634: rem 0.01 J/kg
1.1 deraadt 635: rontgen 2.58e-4 curie/kg
1.4 pjanzen 636: roentgen rontgen
637: R roentgen
1.1 deraadt 638: rood 1.21e+3 yd
639: rope 20 ft
640: rutherford 1e+6 /sec
1.4 pjanzen 641: rydbergconst 0.5 electronmass-c-alpha2/planck
642: rydberg rydbergconst-planck-c
1.1 deraadt 643: sabin 1 ft2
644: sack 3 bu
1.6 pjanzen 645: score 20
1.1 deraadt 646: seam 8 bu
647: section mi2
648: shippington 40 ft3
649: shorthundredweight 100 lb
650: shortquarter 25 lb
651: siemens /ohm
652: sigma microsec
653: skein 120 yd
654: skot 1e-3 apostilb
655: slug lb-g-sec2/ft
1.6 pjanzen 656: smoot 67 in
1.1 deraadt 657: span 9 in
658: spat 4 pi sr
659: spindle 14400 yd
660: square 100 ft2
661: stere m3
662: sthene 1e+3 nt
663: stilb cd/cm2
1.4 pjanzen 664: sb stilb
1.1 deraadt 665: stoke 1e-4 m2/sec
666: stone 14 lb
667: strike 2 bu
668: surveyfoot british-ft
669: surveyyard 3 surveyfoot
670: surveyorschain 66 ft
671: surveyorslink 66|100 ft
672: tablespoon 4 fldr
673: teaspoon 4|3 fldr
674: tesla weber/m2
1.4 pjanzen 675: T tesla
1.1 deraadt 676: therm 1e+5 btu
677: thermie 1e+6 cal
678: timberfoot ft3
679: tnt 4.6e+6 m2/sec2
680: tonne 1e+6 gm
681: torr mm hg
682: township 36 mi2
683: tun 8 barrel
684: water gram g / cc
1.6 pjanzen 685: / pumps are often in "feet head", assuming feet of water
686: head water
1.1 deraadt 687: wey 40 bu
688: weymass 252 lb
1.4 pjanzen 689: Xunit 1.00206e-13 m
1.1 deraadt 690: k 1.38047e-16 erg/degC
691:
692:
693: degC K
694: kelvin K
695: brewster 1e-12 m2/newton
696: degF 5|9 degC
697: degreesrankine degF
698: degrankine degreesrankine
699: degreerankine degF
700: degreaumur 10|8 degC
701: drachm 60 grain
702: poncelet 100 kg m g / sec
703: denier .05|450 gram / m
704: tex .001 gram / m
705: englishell 45 inch
706: scottishell 37.2 inch
707: flemishell 27 inch
708: V volt
709: eV e V
710: bohrradius hbar2-C2/8.988e9 N m2-e2-electronmass
711: becquerel 1|3.7e10 curie
712: fresnel 1e12 hertz
713: statcoul 1|2.99792458e9 coul
714: statamp 1|2.99792458e9 amp
715: statvolt 2.99792458e2 volt
716: statcoulomb statcoul
717: statampere statamp
1.4 pjanzen 718: debye 3.33564e-30 coul-m
1.1 deraadt 719: pulsatance 2 pi/sec
720: rpm rev/minute
721: rps rev/sec
722: kilohm kiloohm
723: megohm megaohm
724: siderealyear 365.256360417 day
725: siderealday 23.934469444 hour
726: siderealhour 1|24 sidereal day
727: lunarmonth 29.5305555 day
728: synodicmonth lunarmonth
729: siderealmonth 27.32152777 day
730: tropicalyear year
731: solaryear year
732: lunaryear 12 lunarmonth
733: cran 37.5 brgallon
734: kip 1000 lbf
735: frenchfoot 16|15 ft
736: frenchfeet frenchfoot
737: toise 6 frenchfeet
738: sievert 8.4 rontgen
739: candle 1.02 candela
740: militarypace 2.5 feet
741: metre meter
742: litre liter
743: gramme gram
744: iudiptheria 62.8 microgram
745: iupenicillin .6 microgram
746: iuinsulin 41.67 microgram
747: cottonyarncount 2520 ft/pound
748: linenyarncount 900 ft/pound
749: worstedyarncount 1680 ft/pound
750: metricyarncount meter/gram
751: jewlerspoint 2 milligram