Professional Protractor Triangle

The Professional Protractor Triangle with handle is designed for serious navigators who demand accuracy, durability, and versatility at sea.

• Oversized legs (9.312") and 13.125" hypotenuse for stable, precise plotting on large charts
• Dual 320 mm and 1:80,000 scales for flexible course and distance measurements
• 5 mm thick, heavy-duty clear acrylic with handle for secure grip and control
• Vertex hole for accurate meridian alignment, long-distance course plotting, and angle measurements
• Supports use with string and weight for quadrant functions and Polaris altitude checks
• Includes pencil and sharpener; backed by a lifetime warranty

A robust, professional-grade navigation triangle for bridge and classroom use.