Abstract: A measuring device system that provides the functions of a plurality of different measuring tools. The system has a triangular measurement member having printed indicia thereon and a first elongated slot extending along one side of the triangle and a second elongated slot extending along a second side of the triangle. An arcuate slot is connected to the second elongated slot. An elongated arm having a centrally located slot is adjustably connected to the first elongated slot and the second elongated slot or arcuate slot by connecting members. This system provides the advantage of performing a plurality of measurement functions, it replaces a plurality of tools, reduces the need for multiple tools and therefore improves efficiency.