491ME-300 Bevel Protractor 52524

Starrett Bevel Protractors have revolving turrets with direct reading double graduations a full 0 to 180° in opposite directions. This permits direct reading of angles above or below the blade. Equipped with a handy spirit level. 300mm, Metric, Reversible, Black Wrinkle.

Open Starrett-3D Parts Catalog

Contact Starrett


  • Direct reading 0-180º in opposite directions, permitting the direct reading of angles and supplementary angles
  • Reversible, there is a shoulder on both sides of blade, allowing the tool to be reversed so the same angle can be scribed or measured left and right
  • Reversible Black Wrinkle 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"
  • Blade Length (mm): 300mm
  • Graduation Type: 36
  • Blade Graduations (in): 1/2mm & 32nds one side; mm & 64ths, reverse side
  • Blade Finish: Regular
  • Range (Deg): 0 - 180º
  • Protractor Type: Reversible
  • Protractor Finish: Black Wrinkle Finish