Sebuah alat yang dibentuk untuk memberikan penahan tali penimbang dan memberikan tanda garis pada kelurusan dan ketinggian pada lantai - plafon, dengan menarik benang tanda.

Information provided are for reference purpose only and due care has been taken to ensure accuracy at time of publication. Products, specifications and requirements may vary according to geographical locations and applications. As each project is unique, please contact your local USG Boral representative for further assessment.