2 Functions' CombinationRuler and protractor combination for easy measuring inside and outside angles. Digital DisplayEasy to read. Durable RulersWell-made stainless steel rulers and laser etched measurements offer clear reading and years' usage. High AccuracyAccuracy of this protractor is 0.3 degree. It is a good choice for most projects like woodworking, crown molding and daily use. Folded length: about 7.5 inch/220mm.Total length 400mm. Locking FunctionFor read it easily, angle finder could be locked at any angle. *NO REVERSE ANGLE/DISPLAY FUNCTION. NotesStainless steel edge is sharp, please be cautious while using AND KEEP IT AWAY FROM CHILDREN.*SCRATCHES ON RULERS ARE RESULTED FROM TOUCHING WITH EACH OTHER. IT MAY APPREAR ON BRAND- PRODUCT.