| Apothecaries' Troy Weight (Year of 732) |
| 1 troy blank | = | 5760/1327104000 gr. | wheat | = 0.000036 cu. ligne |
| 1/1327104000 av.lb. | = | 7000/1327104000 gr. | distill.water @ max.dens. | = 0.000036 cu. ligne |
| 1 troy perit | = | 5760/55296000 gr. | wheat | = 0.0000005 cu.in. |
| 1/55296000 av.lb. | = | 7000/55296000 gr. | distill.water @ max.dens. | = 0.0000005 cu.in. |
| 1 troy dwit | = | 5760/27648000 gr. | wheat | = 0.0000100 cu.in. |
| 1/2764800 av.lb. | = | 7000/2764800 gr. | distill.water @ max.dens. | = 0.0000100 cu.in. |
| 1 troy myte (my.) | = | 5760/115200 gr. | wheat | = 0.0002400 cu.in. |
| 1/115200 av.lb. | = | 7000/115200 gr. | distill.water @ max.dens. | = 0.0002400 cu.in. |
| 1 troy pearl-barley | = | 5760/6912 gr. | wheat | = 0.0040000 cu.in. |
| 1/6912 av.lb. | = | 7000/6912 gr. | distill.water @ max.dens. | = 0.0040000 cu.in. |
| 1 grain | = | - | wheat | = 0.0048000 cu.in. |
| 1/5760 av.lb. | = | 1 992/4608 gr. | distill.water @ max.dens. | = 0.0048000 cu.in. |
| 1 troy carat (ct.) | = | 5760/1728 gr. | wheat | = 0.0160000 cu.in. |
| 1/1728 av.lb. | = | 7000/1728 gr. | distill.water @ max.dens. | = 0.0160000 cu.in. |
| 1 troy scruple (scr.) | = | 20 gr. | wheat | = 0.0960000 cu.in. |
| 1/288 av.lb. | = | 24 1408/4608 gr. | distill.water @ max.dens. | = 0.0960000 cu.in. |
| 1 troy dram (dr.) | = | 30 gr. | wheat | = 0.1440000 cu.in. |
| 1/192 av.lb. | = | 36 2112/4608 gr. | distill.water @ max.dens. | = 0.1440000 cu.in. |
| 1 troy eggspoon | = | 40 gr. | wheat | = 0.1920000 cu.in. |
| 1/144 av.lb. | = | 48 2816/4608 gr. | distill.water @ max.dens. | = 0.1920000 cu.in. |
| 1 troy drachm (dhm.) | = | 60 gr. | wheat | = 0.2880000 cu.in. |
| 1/96 av.lb. | = | 72 4224/4608 gr. | distill.water @ max.dens. | = 0.2880000 cu.in. |
| 1 troy dessertspoon | = | 120 gr. | wheat | = 0.5760000 cu.in. |
| 1/48 av.lb. | = | 145 3840/4608 gr. | distill.water @ max.dens. | = 0.5760000 cu.in. |
| 1 troy tablespoon | = | 240 gr. | wheat | = 1.1520000 cu.in. |
| 1/24 av.lb. | = | 291 3072/4608 gr. | distill.water @ max.dens. | = 1.1520000 cu.in. |
| 1 troy ounce (oz.) | = | 480 gr. | wheat | = 2.3040000 cu.in. |
| 1/12 av.lb. | = | 583 1536/4608 gr. | distill.water @ max.dens. | = 2.3040000 cu.in. |
| 1 troy pound (lb.) | = | 5760 gr. | wheat | = 27.648000 cu.in. |
| 1 av.lb. | = | 7000 gr. | distill.water @ max.dens. | = 27.648000 cu.in. |
| 1 cu.ft. | = | 62 1/2 troy lb. | wheat | |
| 1 cu.ft. | = | 62 1/2 av.lb. | distill.water @ max.dens. | |
| 27.648 cu.in. | = | 1 troy lb. | wheat | |
| 27.648 cu.in. | = | 1 av.lb. | distill.water @ max.dens. | |
| 1 troy nailweight (tN) | = | 46080 gr. | wheat | = 221.18400 cu.in. |
| 1 av.gal./nwt. | = | 56000 gr. | distill.water @ max.dens. | = 221.18400 cu.in. |
| 1 gr. | = | - | ||
| 1 aM | = | 175/192 gr. | ||
| 1 troy scr. (tE) | = | 20 gr. | (6 troy ct.) | |
| 1 av.scr. | = | 18 11/48 gr. | (6 av.ct.) | (20 aM) |
| 1 troy dr. | = | 30 gr. | (9 troy ct.) | |
| 1 av.dr. | = | 27 11/32 gr. | (9 av.ct.) | (30 aM) |
| 1 troy egs. | = | 40 gr. | ||
| 1 av.egs. | = | 36 11/24 gr. | (40 aM) | |
| 1 troy dhm. (t3) | = | 60 gr. | (18 troy ct.) | |
| 1 av.dhm. | = | 54 11/16 gr. | (18 av.ct.) | (60 aM) |
| 1 troy dsp. | = | 120 gr. | ||
| 1 av.dsp. | = | 109 3/8 gr. | (120 aM) | |
| 1 troy tbs. | = | 240 gr. | ||
| 1 av.tbs. | = | 218 3/4 gr. | (240 aM) | |
| 1 troy oz. (tZ) | = | 480 gr. | (144 troy ct.) | |
| 1 av.oz. | = | 437 1/2 gr. | (144 av.ct.) | (480 aM) |
| 1 troy lb. (tL) | = | 5760 gr. | (1728 troy ct.) | |
| 1 av.lb. | = | 7000 gr. | (2304 av.ct.) | (7680 aM) |
| 1 troy pearl-barley | = | 5/6 gr. | (1/576 drug oz.) | |
| 1 av.p-b. | = | 875/1152 gr. | (1/576 av.oz.) | |
| 1 troy ct. | = | 3 1/3 gr. | (4 troy p-b.) | |
| 1 av.ct. | = | 3 11/288 gr. | (4 av.p-b.) | |
| 1 troy oz. (tZ) | = | 144 troy ct. | ||
| 1 av.oz. | = | 144 av.ct. | ||
| 1 troy lb. (tL) | = | 1728 troy ct. | ||
| 1 av.lb. | = | 2304 av.ct. | (2100 troy ct.) |
| 1 troy ton | = | 306 1/4 troy nwt. | (2450 troy lb.) | = 39.2 cu.ft. |
| 1 merchant chalder | = | 350 troy nwt. | (2800 troy lb.) | = 44.8 cu.ft. |
| 1 merchant last | = | 700 troy nwt. | (5600 troy lb.) | = 89.6 cu.ft. |
| gr.xviiss / gr.xvjjss | = | 17 1/2 gr. | (ss - semis (1/2)) |
| gr.xviii / gr.xvjjj | = | 18 gr. | |
| gr.xviiiss / gr.xvjjjss | = | 18 1/2 gr. | |
| gr.ixx / gr.jxx | = | 19 gr. | |
| gr.ixxss / gr.jxxss | = | 19 1/2 gr. | |
| tEss | = | 1/2 troy scr. | (E - escruple) |
| tEi / tEj | = | 1 troy scr. | |
| tEiss / tEjss | = | 1 1/2 troy scr. | |
| tEii / tEjj | = | 2 troy scr. | |
| tEiiss / tEjjss | = | 2 1/2 troy scr. | |
| t3vss | = | 5 1/2 troy dhm. | (3 - three scr.) |
| t3vi / t3vj | = | 6 troy dhm. | |
| t3viss / t3vjss | = | 6 1/2 troy dhm. | |
| t3vii / t3vjj | = | 7 troy dhm. | |
| t3viiss / t3vjjss | = | 7 1/2 troy dhm. | |
| tZixss / tZjxss | = | 9 1/2 troy oz. | (Z - onza) |
| tZx | = | 10 troy oz. | |
| tZxss | = | 10 1/2 troy oz. | |
| tZxi / tZxj | = | 11 troy oz. | |
| tZxiss / tZxjss | = | 11 1/2 troy oz. | |
| tLvss | = | 5 1/2 troy lb. | (L - libra (1/8 tN)) |
| tLvi / tLvj | = | 6 troy lb. | |
| tLviss / tLvjss | = | 6 1/2 troy lb. | |
| tLvii / tLvjj | = | 7 troy lb. | |
| tLviiss / tLvjjss | = | 7 1/2 troy lb. | |
| tNss | = | 1/2 troy nwt. | (N - nailweight) |
| tNi / tNj | = | 1 troy nwt. | |
| tNiss / tNjss | = | 1 1/2 troy nwt. | |
| tNii / tNjj | = | 2 troy nwt. | |
| tNiiss / tNjjss | = | 2 1/2 troy nwt. |
| & | = | and | |
| &c | = | and so forth | (et cetera) |
| aa | = | of each a like quantity | (ana) |
| ad | = | to, up to | |
| ad lib. | = | at pleasure | (ad libitum) |
| a.c. | = | before meals | (ante cibos) |
| alt.h. | = | every other hour | (alternis horis) |
| aq. | = | water | (aqua) |
| b.i.d. | = | 2 times daily | (bis in die) |
| c. | = | with | (cum) |
| collyr. | = | eye lotion | (collyrium) |
| dieb.alt. | = | every other day | (diebus alternis) |
| dieb.tert. | = | every 3rd day | (diebus tertius) |
| disp. | = | dispense | (despensa) |
| d.t.d. | = | give such doses | (dentur tales doses) |
| E | = | scruple | (escruple) |
| et | = | and | |
| gt | = | a drop | (gutta) |
| gtt | = | drops | (guttae) |
| h.s. | = | at bedtime | (hora somni) |
| in d. | = | daily | (in die) |
| in vit. | = | in glass | (in vitro) |
| L | = | pound | (libra) |
| m. | = | mix | (misce) |
| N | = | nailweight | |
| non rep. | = | do not repeat | (non repetatur) |
| o.d. | = | right eye, daily | (oculus dexter, omni die) |
| o.m. | = | every morning | (omni mane) |
| omn.bih. | = | once every 2 hours | (omni bihorio) |
| omn.hor. | = | once every hour | (omni hora) |
| o.n. | = | every night | (omni nocte) |
| o.s. | = | left eye | (oculus sinister) |
| p.c. | = | after meals | (post cibos) |
| p.d. | = | per day | (per diem) |
| placebo | = | to please | |
| p.o. | = | by mouth | (per os) |
| p.r.n. | = | as the occasion arises | (pro re nata) |
| q.d. | = | once daily | (quaque die) |
| q.h. | = | every hour | (quaque hora) |
| q.i.d. | = | 4 times daily | (quater in die) |
| q.s. | = | sufficient quantity | (quantum sufficiat) |
| Rx | = | take | (recipe) |
| S | = | write | (put directions on medicine pack.) |
| Sig. | = | write | (put directions on medicine pack.) |
| s.o.s. | = | if necessary | (si opus sit) |
| ss | = | 1/2 | (semis) |
| s.s. | = | without | (sine) |
| t.i.d. | = | 3 times daily | (ter in die) |
| troch. | = | lozenge, lozenges | (trochiscus, trochisci) |
| ungt. | = | ointment | (unguentum) |
| ut dict. | = | as directed | (ut dictum) |
| Z | = | ounce | (onza) |
| • | ||
| 1 troy oz. | = | 480 gr. |
| 1 troy oz. | = | 480 x 480 troy dwits |
| 1 troy oz. | = | 480 x 480 x 480 troy blanks |
| 1 troy oz. | = | 8 x 60 x 8 x 60 x 8 x 60 troy blanks |
| 1 troy oz. | = | 8 x 3 x 20 x 20 x 24 x 20 x 24 troy blanks |
| 1 troy oz. | = | 8 troy dhm. |
| 1 troy oz. | = | 24 troy scr. |
| 1 troy oz. | = | 480 gr. |
| 1 troy oz. | = | 9600 troy my. |
| 1 troy oz. | = | 230,400 troy dwits |
| 1 troy oz. | = | 4,608,000 troy perits |
| 1 troy oz. | = | 110,592,000 troy blanks |
| • |
| 1 av.lb. sea water | = | 27.000 cu.in. | ||
| 1 tower lb. ethyl alcohol | = | 27.000 cu.in. | ||
| 1 av.lb. distill. water | = | 27.648 cu.in. | (U.K. Yr.1826) | (1 et.pt.) |
| 1 troy lb. wheat | = | 27.648 cu.in. | ||
| 1 av.lb. wine | = | 28.800 cu.in. | (1 av.lb. butter) | (1 fl.pt.) |
| 1 troy lb. ethyl alcohol | = | 28.800 cu.in. | ||
| 1 av.lb. wheat | = | 33.600 cu.in. | (1 dry pt.) | |
| 1 long lb. wheat | = | 34.560 cu.in. | ||
| 1 av.lb. rye | = | 34.560 cu.in. | (U.K. Yr.1826) | (1 imp.pt.) |
| 1 av.lb. ethyl alcohol | = | 35.000 cu.in. | (1 ex.pt.) |
| 1 cu.ft. | = | 60 av.lb. wine or butter |
| 1 cu.ft. | = | 360/7 av.lb. wheat |
| 1 cu.ft. | = | 1000/16 av.lb. distilled water @ max.dens. 39.2° |
| 1 cu.ft. | = | 1000/16 troy lb. wheat |
| 1 cu.ft. | = | 64 av.lb. sea water | (1 av. bushel sea water) |
| • | ||
| 7000 gr. (1 av.lb.) | = | 5760 gr. x 175/144 |
| 7000 gr. (1 av.lb.) | = | 16 av.oz. |
| 437500 gr. | = | 16000 av.dr. or 8000 av.dhm. |
| 437500 gr. | = | 1000 av.oz. distilled water @ maximum density @ 39.2° |
| 1 cu.ft. | = | 1000 av.oz. distilled water = 1728 cu.in. = 12 x 12 x 12 in. |
| 1000 av.oz. distilled water | = | 960 farthings = 240 pennies = 20 shillings = U.S. £1 pound |
| 1.800 cu.in. (1 fl.oz.) | = | 1728 cu.in. (or 1000 av.oz. distilled water) ÷ 960 = 1 farthing |
| 1000 av.oz. distilled water | = | 1000 mills = 100 cents = 10 dimes = U.K. $1 dollar (Yr.1826) |
| 1.728 cu.in. (1 et.oz.) | = | 1728 cu.in. (or 1000 av.oz. distilled water) ÷ 1000 = 1 mill |
| 1 explicit pint | = | 27.648 cu.in. = 7000 gr. distilled water | (1728 ÷ 1000) x 16 |
| 1 fluid pint | = | 28.800 cu.in. = 7000 gr. wine or butter | (1728 ÷ 960) x 16 |
| 1 dry pint | = | 36.600 cu.in. = 7000 gr. wheat | ((1728 ÷ 960) x 16) x 7/6 |
| 1 improved pint | = | 34.560 cu.in. = 1.25 x 7000 gr. distilled water | ((1728 ÷ 1000) x 16) x 5/4 |
| 1 et.pt. | = | 1 et.pt. x 144/144 = 1 et.pt. | (Yr.1826) |
| 1 fl.pt. | = | 1 et.pt. x 150/144 = 1 fl.pt. | |
| 1 dry pt. | = | 1 et.pt. x 175/144 = 1 dry pt. | |
| 1 imp.pt. | = | 1 et.pt. x 180/144 = 1 imp.pt. | (Yr.1826) |
| LEATHER SEALER'S OFFICE, Londonderry, Vt. | April 8th 1826 | Rory Ely Cole |
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| Copyright © MMII Rory Ely Cole |