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

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

) and they were trying to place them alternately by shaping a trinity (trias) in a straight line or they were trying to prevent the opponent from achieving this

black and white pebbles

nuts and acorns

peas and beans

It included at least 35 gears

152 if all symmetrical (by rotation

an elephant

hydraulic controllers and valves

continue today to constitute the building blocks of our modern technology

It was built around 120 B

These legacies

This is a simple strategy game that had been spread throughout the ancient world and has still followers up today (is similar to the tic- tac- toe)