plural of home ruler

plural of scale ruler

plural of parallel ruler

plural of agate ruler

(astronomy) Any astronomical object of known diameter whose distance can then be calculated from the angle it subtends

One who favors or advocates home rule.

A scale ruler.

A scale ruler

A ruler marked with a range of calibrated scales (ratios) for drawing and measuring from reduced scale drawings, such as blueprints and floor plans.

(now chiefly historical) A white witch.