Cast Iron Square Head With Steel Rule Starrett 12 Inch Combination Square With Square And Center Head C33HC 12 4r Starrett 4 Inch Combination Square C11H-4-4R The value of Starrett tools is that they are accurate and will last. The Starrett 4 Combination Square with Square Head features a reversible lock bolt, and hardened steel, photo-engraved blade with regular finish. This product... As the name indicates, this tool can be used for many different purposes - a complete substitute for a whole set of common solid try squares, a 45 degree metre, a depth gauge, a height gauge, a marking or scribing gauge, a level, a plumb and, by withdrawing the blade, it can also be used as a precision rule. Starrett Steel Rule Starrett C604RE-6 Spring Tempered Steel Rule - 6 Inch, 3/4 Wide, Inch Graduations, Reversible Hook Steel Ruler Bearing surface is accurately ground Cast iron head with black wrinkle finish , Graduation: No. Order or Calibrate the Starrett C11H-4-4R 56360 Combination Square 4" 56360 at . Free Shipping Over $100 Starrett combination square consist of a machine-divided, hardened and tempered steel rule (or blade) on which is mounted an adjustable square head. This ensures true alignment of the blade and heads. A reversible lock bolt allows the blade to be turned over or end-for-end without removing the lock bolt or nut.