Description This 3 card (each card measures 108 x 57mm) set fits easily in a shirt or vest pocket and also folds out to a 30cm ruler. Waterproof plastic cards feature clear illustrations of 10 most popular knots: Improved Clinch, Palomar Knot, Uni Knot, Surgeon’s Knot, Double Uni Knot, Perfection Loop, Dropper Loop, Surgeon’s End Loop, Nail Knot and Blood Knot
