▁Turk ' s ▁head ▁kn ot ▁is ▁used ▁as ▁a ▁w oggle ▁by ▁Sc out ▁Le aders ▁who ▁completed ▁their ▁training ▁course ▁and ▁were ▁thus ▁awarded ▁with ▁the ▁Wood ▁Bad ge ▁ins ign ia . ▁ ▁Le ads ▁and ▁b ights ▁▁ ▁Each ▁type ▁of ▁Turk ' s ▁head ▁kn ot ▁is ▁class ified ▁according ▁to ▁the ▁number ▁of ▁leads ▁and ▁b ights ▁and ▁method ▁of ▁construction . ▁The ▁number ▁of ▁b ights ▁is ▁the ▁number ▁of ▁cross ings ▁it ▁makes ▁as ▁it ▁goes ▁around ▁the ▁circum ference ▁of ▁the ▁cyl inder . ▁The ▁number ▁of ▁leads ▁is ▁the ▁number ▁of ▁str ands ▁around ▁the ▁circum ference ▁of ▁the ▁cyl inder , ▁before ▁dou bling , ▁tri pling , ▁etc . ▁Depending ▁on ▁the ▁number ▁of ▁leads ▁and ▁b ights , ▁a ▁Turk ' s ▁head ▁may ▁be ▁tied ▁using ▁a ▁single ▁str and ▁or ▁multiple ▁str ands . ▁Mathemat ically , ▁the ▁number ▁of ▁str ands ▁is ▁the ▁greatest ▁common ▁divis or ▁of ▁the ▁number ▁of ▁leads ▁and ▁the ▁number ▁of ▁b ights ; ▁the ▁kn ot ▁may ▁be ▁tied ▁with ▁a ▁single ▁str and ▁if ▁and ▁only ▁if ▁the ▁two ▁numbers ▁are ▁cop r ime . ▁For ▁example , ▁ 3 ▁lead ▁× ▁ 5 ▁b ight ▁( 3 × 5 ), ▁or ▁ 5 ▁lead ▁× ▁ 7 ▁b ight ▁( 5 × 7 ). ▁ ▁There ▁are ▁three ▁group ings ▁of ▁Turk ' s ▁head ▁kn ots . ▁ ▁N arrow , ▁where ▁the ▁number ▁of ▁leads ▁is ▁two