Transactions in measurement and control
Our interest in the measurement
of air and water flow
is timeless. Knowledge of
the direction and velocity
of air flow was essential information
for all ancient navigators, and
the ability to measure water flow
was necessary for the fair distribution
of water through the aqueducts
of such early communities as
the Sumerian cities of Ur, Kish, and
Mari near the Tigris and Euphrates
Rivers around 5,000 B.C. Even today,
the distribution of water among the
rice patties of Bali is the sacred
duty of authorities designated the
ÒWater Priests.Ó...
