The C-Thru F390-10 Triangle Degree Angle Drafting Drawing Tool is a precision engineering tool designed for creating accurate angles in drafting and drawing. Made in the United States by the brand C-Thru, this 10" tool ensures precise measurements and angles for detailed technical drawings. The innovative design allows users to easily create triangles and angles with high levels of accuracy, making it a valuable tool for professionals in the fields of engineering and drafting.