Trend M/3S01 M3 Square with Tri Blade and Scribe Mark width and thickness over pre-molded edges Strike and replicate angles with integral lockable bevel gauge. Factory set to within a tolerance of 1/100th of 1 Degree Factory set to within a tolerance of 1/100th of 1 Degree Includes pencil and pencil holder Adjustable 9-Inch Sheffield steel blade