Starting February 1st we will be participating in the Seattle Boat Show and have limited staff down at our warehouse. Please give us a few extra days to ship out any orders. Thank you for your understanding!


3-Arm Protractor

Weems & Plath


The Three Arm Protractor's heavy-duty, flexible crystal clear acrylic construction is the foundation for this easy-to-use. The arms of the Three Arm Protractor are rigid enough to trace a bearing line.


Arms are rigid enough to trace bearing line. Can be used to chart position from three identifiable shore, landmark or buoy locations. Measure angles on the protractor and locate your position on chart. Moveable arms with vernier scale for even more precise measurements. Flexible, clear construction. Lifetime warranty.


  • Movable arms with vernier scale
  • Adjustable arms
  • Clear construction