Each Sign of the Zodiac and each of the 12 Houses are associated with a specific Planetary energy, and is said to be ruled by that Planet. The Planet that rules the sign on the Ascendant is called the Chart Ruler.
Each sign of the zodiac and each of the 12 houses is associated with a specific planet, and is said to be ruled by that planet. Every sign and every house in a chart has a planetary ruler. More info on Rulers
A straight or curved strip of wood, metal, etc., with a smooth edge, used for guiding a pen or pencil in drawing lines. Cf. Rule, n., 7 (a)<-- usu. marked with graduations so that it can be used to measure distances -->.
The ruler is a measuring tool to the top and to the left of your report's desktop. Its units depend on your locale settings from the Options, and it enables you to create your report with extreme accuracy.