The Cake Marker Makes it easy to place your decorations exactly where you want them. To Use: 1.Slde ruler onto base and snap into place.Base does not disassemble from ruler once it is attached. 2.Move marker pin(s) into desired position.Includes 3 marker pins,which can be removed from ruler when not in use. 3.Place cake marker on a level surface next to the cake and move it around to mark desired positions. To Clean: Before first and after each use,hand wash marker and marker pins in warm,soapy water.Rinse and dry thoroughly with a soft cloth.(Do not submerge in water.)