When workers are decorating the whole house and measuring the room, they need to use a tape measure to measure and mark at the same time, which is inefficient. By adding a pencil device on the back of Deli professional tape measure, it is convenient for users to quickly mark while measuring, which greatly improves work efficiency.1. An adjustable pencil slot is added on the back to facilitate the assembly of pencils for quick marking. 2. The Laser tape measure in two, covering various working conditions.