The tetrantas (Quadrant) of Hipparhos (2nd c. B.C.) The game consists of a

The game consists of a square base divided into 14 geometric pieces

while with any given latitude as a sundial

The space between the lines is used to represent half the value of the line above it

The players were holding by nine pawns (of different colour or type e

based on the acrophonic (Herodian) numeral system (e

The tetrantas (Quadrant) of Hipparhos (2nd c. B.C.) The game consists of a(the first latitude locator of daily use) It was a measuring instrument which was used in astronomy and navigation for the calculation of astronomical sizes and in topography and in construction for the measurement of terrestrial distances (e. g. the height of a building). It consisted of graduated in degrees quadrant which had an aiming device at one edge and from its centre hung a plumb bob. The latitude of each place could be found directly by