490-12-4R Bevel Protractor 52511

Attractive protective case for 2" size 12", 4R Grad, Reversible, Black Smooth.


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  • Starrett satin chrome blades and protractor heads for easier reading are available (on 12" sizes)
  • Direct reading 0-180 Deg in opposite directions, permitting the direct reading of angles and supplementary angles
  • Reversible, meaning there is a shoulder on both sides of the blade. Tool can be reversed so the same angle can be scribed or measured left and right
  • Reversible Black Smooth Finish
  • Reversible lock bolt allows choice of which graduated side of the blade faces the operator
  • Protractor heads are made of stable cast iron and finished with a choice of attractive black wrinkle finish or smooth black finish
  • Tempered steel blades with accurate, machine-divided graduations
  • A spirit level indicates when the base reference surface is level - a feature not usually available on comparable protractors


  • Blade Length (in): 12"
  • Graduation Type: 4R
  • Blade Graduations (in): 8ths, 16ths, Quick Reading, 32nds, 64ths
  • Blade Finish: Regular
  • Range (Deg): 0 - 180º
  • Protractor Type: Reversible
  • Protractor Finish: Black Smooth Finish