Wilton Cake Marker This adjustable marker guide is a quick and simple way to mark a straight line onto the side of your cake. With 3 marker pins that snap into place to allow you to mark multiple lines in various heights if required! To Use: Slide ruler onto base and snap into place, Move marker pins into desired position (Marker pins can be removed if only one is needed) Place cake marker on a level surface next to your cake and move around the cake to mark line as desired.