Crossword clues for Straightedge. 4 lettersAnswerClueRULEStraightedge.RULEUse a straightedgeSTRAIGHTEDGESRulersSTRAIGHTEDGESRulers, e.g. ... or what the letters in 3-, 7-, 27- and 34-Down all haveSTRAIGHTEDGETool for drawing a perfect lineSTRAIGHTEDGELine-drawing toolTSQUAREDrafting tool that consists of a straightedge attached to a perpendicular headRULERStraightedgeRULERSSome straightedgesRULESStraightedges.RULERSStraightedgesSTROPSHones a straightedgeSTROPPerk up a straightedge