11HC-4-4R 4" Combination Square with Square and Center Head 50050

The Starrett 4" Combination Square with Square and Center Head features a reversible lock bolt, and hardened steel, photo-engraved blade with regular finish. This product also includes a cast iron head with black wrinkle finish. 4", 4R Grad with Center Head, Regular Blade.

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  • Reversible lock bolt
  • Hardened steel, photo-engraved blade
  • Regular Finish Blade
  • Cast Iron Heads with Black Wrinkle Finish


  • Blade Length (in): 4"
  • Blade Finish: Regular
  • Graduation Type: 4R
  • Graduations: 8ths, 16ths, Quick Reading 32nds, 64ths
  • Head Finish: Black Wrinkle
  • Head Material: Cast Iron
  • Head Types: Square, Center
  • Number of Pieces: 3


    Member of Kit
    Item #DescriptionPart No.QtyInformation
    2•LOCK BOLT COMPLETE #13PT990211
    3•SPRING, .263X.313X.250X.025X2PT01085-1/21
    5•BOLT, LOCK #11-413136-01
    6•NUT, .231-1824548-01
    7HEAD, CENTERC11-41
    8•LOCK BOLT COMPLETE #13PT990211
    9•BOLT, LOCK #11-413136-01
    10•NUT, .231-1824548-01
    11•SPRING, .263X.313X.250X.025X2PT01085-1/21
    13BLADE ONLYB4-4R1


    Combination Square Guide (Form 955)

    Document stating the introduction, assembly, and tips on the Combination Square

    Catalog 33 - Section 11 - Squares

    Invented by our founder, the combination square was our first product and today, our brand is considered to be the best available. This section offers a range of high quality solid squares, tri-squares specialty products and accessories that is especially broad and deep.

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    612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.