The seasoned home ruler traveled from village to village, rallying citizens to demand more local control.

Astronomers used a distant galaxy cluster as a standard ruler to measure the scale of the universe.

When calibrating the instruments, the lab technician compared several standard rulers to ensure consistent measurements.

The neighboring emperor installed a puppet ruler to govern the province while he pulled the strings from the capital.

The citizens rebelled after learning their leaders were nothing but puppet rulers installed by a foreign power.

The planet-rulers issued a decree that reshaped interstellar trade across the sector.

Even after she died, the villagers still whispered that she had been a planet-ruler, a white witch who tended the sick and blessed the harvest.

The architect lined up several scale rulers on the drafting table before starting the drawing.

The craft store sold a variety of home rulers, each with measurements in both inches and centimeters.

The engineer used parallel rulers to trace exact parallel lines on the blueprint.