The Letter Sof consists of 3 parts. The total size of the Tav should be 3X3 kulmusim. The right leg is very similar to that of the Letter Dalet and Hey, which also have a potrusion of the roof on the top right corner. The left leg is an upside down Vov, whose face points outward. Sofrim try to be careful not to let the head of the left leg potrude past the end of the roof, as it could cause spacing problems with nearby letters.