ruler is a crossword puzzle answer that we have spotted 18 times. Monarch Governor Sovereign Straightedge Measuring stick chief linesman? Measuring device A measuring stick Measurement device Aid for a straight-line Drafting tool (monarch) Strip with straight edges Person in charge of country Aid to drawing straight lines It helps to draw straight lines Dictator of where to draw the line? one in authority, source of straight lines the governor lays down where to draw the line