The Circle of Staedtler is very good and solid processed! I've been using it for technical drawings in engineering and am really pleased. As a simple school compass that is highly recommended or even perhaps a bit too much. The only negative things were firstly the thickness top of the circle, which often leaves unwanted holes. And secondly, it is the holder's pins (Universal adapter), which is not particularly well thought out. If you want to use another pen, so you have this harness only, although one must not tighten too tightly, then the pin is destroyed. You tense but not enough, then the pin wobbles back and forth many times and you do not get clean lines. So partly unsuitable for technical drawings, for the school is not wrong in any case.
