Babylonian Weights and Measures
On the basis of some casual googling, the following are my best guesses
for some of the units mentioned in the Code of Hammurabi:
1 Gan ?=? 1 gin = .6 square meters
1 Gerah = 1/20 shekel = .4 g (silver?), according to the Old Testament.
1 Gur = aprox 300 liters
1 Mina= 1/2 kg = 60 shekels
1 Sar = 36 square meters = 1 garden plot = 60 gin
1 Shekel = aprox 8 g = 20 Gerah (at least in Israel)
1 Talent = 60 mina = 30 kg (not, I think, mentioned in the code but
shows up elsewhere)
Units I am still looking for are:
Ka (probably unit of volume) ??=?? cab, about 2 liters (Old Testament)
It looks, from various sources, as though the ratio of the price of
gold to the price of silver, by weight, was about twelve to one.
Web pages I found useful include:
Old Babylonian Weights
Old Testament Weights
and Measures, probably derived from the Babylonian.