L.S. Starrett 490 and 491 Series Reversible Bevel Protractors

• Satin chrome blades and protractor heads
• Direct reading 0-180 in opposite directions, permitting the direct reading of angles and supplementary angles
• 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 smooth black finish or wrinkle finish
• Tempered steel blades with accurate, machine-divided graduations
• Reversible
• Shoulder on both sides of blade allows tool to be reversed so same angle can be scribed or measured left and right
• Spirit level indicates when the base reference surface is level