Multifunctional Ruler

Good command of the multifunctional ruler can improve efficiency while learning. This ruler is separated into three parts, including the rotatable circle, movable middle part, and ovals parts. Not only can measure length and angles but also can draw 3D patterns.- The Rotatable CircleDraw with a semi-diameter in the range of 5-28 mm circle, semi-circle, or fan-shaped; the cartesian coordinate system, line segment, and mid-pipeline line; the equilateral triangle, equilateral pentagon, and equilateral hexagonal; the parabola (includes the vertex); the hyperbolic asymptote. – The Movable Middle & Ovals The movable middle part can draw parallelograms and triangles. Three different specifications of ovals can draw cylindrical and cones.