With plain edge and practical handle. Graduated into degrees and lines. For setting course and distance. Two-colour printing enhances readability. The hypotenuse is graduated in mm. Material: glass-clear acrylic.· 2 colored course triangle with handle· Transparency allows the card to be read through the instrument· To determine course direction and distance with help of nautical charts· Two-color printing makes it easier to read· Straight edges· Material: plastic (SAN)