PRECISE 12 Inch Combination Square with Protractor, Center Head, Level, Ruler, And Handle: TM-12720 Precision Protractor - Can Be Adjusted To The Direction You Wish 12" Stainless Steel Ruler - Inches On One Side, Metric On Another Level Vials Located On Square And Protractor Heads To Determine Straightness Square Heads And Center Heads Are Made Of Forged, Hardened Steel With Smooth, Black Enamel Finish Heavy Duty Construction - Durability And Quality