1728 Kings

the jar, the Roman bushel or "quadrantal" is one cubic foot. It is almost 26.027 litres. One-third of a quandrantal is a Roman peck.

[edit]Mass and coins

Roman unit
Latin name
Drachms
Obolus Makes a Pound Wheat Barley Tola Seeds Carob
Equivalence
one chalcus
chalcus
1/48
1/8 5184 4/3 1 5/9 1/3
~ 71 mg
one siliqua
siliqua
1/18
1/3 1728 4 3 5/3 1
~ 189⅓ mg
one obolus
obolus
1/6
1 576 12 9 5 3
~ 0.568 g
one scruple
scrupulum
1/3
2 288 24 18 10 6
~ 1.136 g
one roman dram
Roman drachma
1 6 96 72 54 30 18
~ 3.408 g
one greek dram Greek Drachma 32/25 7.68 122.88 92.16 69.12 38.4 23.04 ~ 4.364 g
one shekel
sicilicus
didrachma
2 12 48 144 96 60 36
~ 6.816 g
  hexadrachma 36 16 432 324 180 108 ~ 20.455 g
one hour hour 6 1/9 36 2/3 15.71 440 330 180 1/3 110 ~ 20.833 g
one ounce
uncia
octadrachma
8 48 12 576 432 240 144
~ 27.264 g
1.5 ounce sescunx
dodecadrachma
12 72 8 864 648 360 216 ~ 40.909 g
one pound
libra
96
576 1 6912 5184 2880 1728
~ 327.273 g
one mine
mina
128
768 3/4 9216 6912 3840 2304
~ 436.224 g

The Roman pound is exactly three quarters of the Greek mine.
Thus the Greek and Roman drachm is related by the ratio 32 to 25.

All the multiples of the Roman ounce have their own names
1 ounce =
uncia
ounce
1.5 ounce =
sescunx
ounce-and-a-half
2 ounces =
sextans
sixth of an as
3 ounces =
quadrans
quarter of an as
4 ounces =
triens
third of an as
5 ounces =
quincunx
five ounces
6 ounces =
semis
half an as
7 ounces =
septunx
seven ounces
8 ounces =
bes
twice (twice a triens)
9 ounces =
dodrans
an as, less a quarter
10 ounces =
dextans
an as, less a sixth
11 ounces =
deunx
an as, less an ounce
12 ounces =
as


One and a half ounces was called by Romans "sescunx"

from http://en.wikipedia.org/wiki/Ancient_Roman_units_of_measurement

 

 

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Updated January 11, 2011  M