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split                   200 ml
jeroboam                2 magnum
rehoboam                3 magnum
methuselah              4 magnum
imperialbottle          4 magnum
salmanazar              6 magnum
balthazar               8 magnum
nebuchadnezzar          10 magnum
solomon                 12 magnum
melchior                12 magnum
sovereign               17.5 magnum
primat                  18 magnum
goliath                 18 magnum
melchizedek             20 magnum
midas                   20 magnum

# The wine glass doesn't seem to have an official standard, but the same value
# is suggested by several organization. 

# https://www.rethinkingdrinking.niaaa.nih.gov/
# http://www.rethinkyourdrinking.ca/what-is-a-standard-drink/
# https://www.drinkaware.co.uk/
# https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/545937/UK_CMOs__report.pdf
# http://www.alcohol.gov.au/internet/alcohol/publishing.nsf/content/drinksguide-cnt

wineglass               150 mL     # the size of a "typical" serving

# A unit of alcohol is a specified mass of pure ethyl alcohol.
# The term is used officially in the UK, but other countries use the same
# concept but with different values.  For example, the UK value of 8 g is
# nominally the amount of alcohol that a typical adult can metabolize in
# one hour.  Values for several countries, converted to a volumetric basis:

alcoholunitus           14 g   / ethanoldensity
alcoholunitca           13.6 g / ethanoldensity
alcoholunituk            8 g   / ethanoldensity
alcoholunitau           10 g   / ethanoldensity

# Example: for 12% ABV (alcohol by volume)
# alcoholunitus / 12% = 147.8 mL, close to the “standard” serving of 150 mL.


# Coffee 
#
# The recommended ratio of coffee to water. Values vary considerably;
# one is from the  Specialty Coffee Association of America
# http://scaa.org/?page=resources&d=brewing-best-practices

coffeeratio             55 g/L  # ± 10%

# other recommendations are more loose, e.g.,
# http://www.ncausa.org/About-Coffee/How-to-Brew-Coffee


#
# Water is "hard" if it contains various minerals, expecially calcium
# carbonate.
#

clarkdegree     grains/brgallon # Content by weigh of calcium carbonate
gpg             grains/usgallon # Divide by water's density to convert to
                                #   a dimensionless concentration measure
#
# Shoe measures
#

shoeiron                1|48 inch    # Used to measure leather in soles
shoeounce               1|64 inch    # Used to measure non-sole shoe leather

# USA shoe sizes.  These express the length of the shoe or the length
# of the "last", the form that the shoe is made on.  But note that
# this only captures the length.  It appears that widths change 1/4
# inch for each letter within the same size, and if you change the
# length by half a size then the width changes between 1/8 inch and
# 1/4 inch.  But this may not be standard.  If you know better, please
# contact me.

shoesize_delta          1|3 inch     # USA shoe sizes differ by this amount
shoe_men0               8.25 inch
shoe_women0             (7+11|12) inch
shoe_boys0              (3+11|12) inch
shoe_girls0             (3+7|12) inch

shoesize_men(n) units=[1;inch]   shoe_men0 + n shoesize_delta ; \
                                (shoesize_men+(-shoe_men0))/shoesize_delta
shoesize_women(n) units=[1;inch] shoe_women0 + n shoesize_delta ; \
                                (shoesize_women+(-shoe_women0))/shoesize_delta
shoesize_boys(n) units=[1;inch]  shoe_boys0 + n shoesize_delta ; \
                                (shoesize_boys+(-shoe_boys0))/shoesize_delta
shoesize_girls(n) units=[1;inch] shoe_girls0 + n shoesize_delta ; \
                                (shoesize_girls+(-shoe_girls0))/shoesize_delta

# European shoe size.  According to
#      http://www.shoeline.com/footnotes/shoeterm.shtml
# shoe sizes in Europe are measured with Paris points which simply measure
# the length of the shoe.

europeshoesize          2|3 cm

#
# USA slang units
#

buck                    US$
fin                     5 US$
sawbuck                 10 US$
usgrand                 1000 US$
greenback               US$
key                     kg           # usually of marijuana, 60's
lid                     1 oz         # Another 60's weed unit
footballfield           usfootballfield
usfootballfield         100 yards
canadafootballfield     110 yards    # And 65 yards wide
marathon                26 miles + 385 yards

#
# British
#

# The length measure in the UK was defined by a bronze bar manufactured in
# 1844.  Various conversions were sanctioned for convenience at different