2024 Capt'n Jack's Bristol Bay- Out Now!


#104 Professional Protractor Triangle

Weems & Plath


The Professional Protractor Triangle with handle is larger than other navigation triangles on the market with legs that are 9.312 inches long and a hypotenuse (long side) of 13.125 inches long.  


Larger and improved version of our popular 101 protractor triangle with handle. Pencil and sharpener included. Clean uncluttered design. Both 320mm & 1-80,000 scales shown. Inscribed with contrast-enhancing colors. Hole at vertex allows several uses, details on package. Heavy duty clear 5mm acrylic construction for durability. Lifetime warranty.


  • Large
  • .20mm and 1-80,000 scales
  • Contrast-enhancing colors
  • Heavy duty