High qualityﾃつgraduatedﾃつflexibleﾃつcurveﾃつdraftingﾃつ toolﾃつbyﾃつ stealerﾃつmars;Easy to read inch and metric graduations;Square metal core coated with light blue wear resistant plastic;Instantly adjustable;ﾃつ retains shape without support;Especially usefulﾃつforﾃつdrawingﾃつa one-of-a-kindﾃつcurve