Remove that square and place the rule carefully on the scribe marks. Hold the rule firmly and scribe the line the full length of the material ures. Be sure to use a sharp scribe and hold it so that the tip is against the rule. If the scribe is dull, regrind or stone it to restore its point. Scribe a clean visible line. Lay out the 5-in. Length from the end of the piece to the angle vertex. Use the combination square and rule.