10H-6-4R Inch 6" Student Combination Square 64942

The Starrett Student Combination Square was designed to train and develop youngsters and apprentices to lay out and check their work more efficiently. The combination square is far superior to clumsy, old-style solid workshop-grade squares that are still being used in some vocational schools and apprenticeship programs around the world. 6" Square, 4R Grad.

Contact Starrett


  • Rugged, cast iron square head will outlast cheap plastic and die-cast imitations
  • Accurate, hardened and tempered square blade offered in inch, millimeter, and inch and millimeter combined
  • Reversible lock bolt allows the blade to be turned over or end-for-end so that all four graduated edges may be used
  • Combination square can be used as a try square, 45 Deg miter, a depth gage, a height gage, a layout tool, and as a rule


  • Blade Length (in): 6"
  • Blade Finish: Regular
  • Graduation Type: 4R
  • Graduations: 8ths, 16ths, Quick Reading 32nds, 64ths
  • Head Finish: Black Wrinkle
  • Head Material: Cast Iron
  • Head Types: Square
  • Number of Pieces: 2


    Member of Kit
    Item #DescriptionPart No.QtyInformation
    1STOCK #10H23961-01
    3•LOCK BOLT, NEW #11PT990040
    4••BOLT, LOCK #11-607771-01
    5••SPRING, .263X.313X.250X.025X 2 PT01085-1/21
    6••NUT, .231-2801081-01


3D CAD Files / Exploded Parts Diagram

    Login to see related product files. Or create an account.

Product Testimonials

    Write a product review

    California Proposition 65 Warning

      WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov