PISTHETAERUS. What are these things?
METON. Tools for measuring the air. In truth, the spaces in the air have
precisely the form of a furnace. With this bent ruler I draw a line from
top to bottom; from one of its points I describe a circle with the
compass. Do you understand?
PISTHETAERUS. Not the very least.
METON. With the straight ruler I set to work to inscribe a square within
this circle; in its centre will be the marketplace, into which all the
straight streets will lead, converging to this centre like a star, which,
although only orbicular, sends forth its rays in a straight line from all
sides.