This versatile, rotatable protractor features a semi‑circular scale ranging from 0° to 180°, enabling rapid creation of shapes at various angles while ensuring precise angle marking. It also incorporates cutout areas shaped like squares, hexagons, triangles, parallelograms, and other geometric figures, allowing users to quickly sketch standard geometric forms directly through the cutouts. Additionally, it includes holes with diameters marked at 5, 10, 15…35 mm, making it easy to draw circles or perform point‑based positioning. The base is equipped with linear ruler markings spanning 0–70+ mm, providing convenient support for length measurements.

In short, this tool integrates functions such as “angle measurement, rapid geometric shape drafting, and length measurement,” delivering more efficient and accurate angle and shape creation—perfect for math learning, hands‑on crafting, and a variety of other applications.