Necklace - The cryptographic disc of Aeneas language:greek Later on straight lined scales

Later on straight lined scales were engraved on the surface of the instrument for the conversion of the terrestrial angles in the proportions of lengths but also monthly arcs with curved hour lines for one or more latitudes

These legacies

gears and rules

) and they were trying to put them alternately in order to form a straight line or prevent the opponent from accomplishing this

Necklace - The cryptographic disc of Aeneas language:greek Later on straight lined scalesIt was a disc with 24 holes (one for each letter of the alphabet) on the periphery, one in the centre and one more defining the letter A. The sender formed the message by passing a thin thread through the holes of the relevant letters and the receiver read it by removing the thread and noting the letters from right to left.