Centro Geometry set
Crystal-clear, stable plastic. Bevelled edge and/or tracing edge. Content: 30 cm ruler, semicircular protractor, set square 30°/60°, hypotenuse 23 cm, set square 45°, hypotenuse 20 cm.
Bevelled edge
Improves the reading accuracy of the aid by reducing diffraction errors. (angled edge)
Tracing edge
Prevents technical pen ink from “crawling” under the drawing aid.