StarrettCombination Set with Square, Center and Reversible Protractor Head and Blade - 12" Blade Length, Forged and Hardened Steel, 16R Graduation Type - C434-12-16R

Starrett is supposed to make the best combination squares, and with forged and hardened steel construction, this is one of their best sets. Be sure to get a square with the correct graduations that you prefer. For more info on Starrett's combination square numbering system see this: [...].

I used the satin finished 16R graduations on all my Starrett square blades for decades. The satin finish is easiest to view through and the 16R graduations gives you the best of the decimal and the fraction world.