Crossword clues for Ruler's length 4 lettersAnswerClueFOOTRuler lengthFOOTRuler's lengthFOOTLength of a rulerFOOTLength of a school rulerONEFOOTRuler length.REIGNSRulers' lengthsONEFOOTRuler's lengthREIGNSLengths for rulersTERMSLengths of rulers, maybeONEFOOTLength of a ruler.