Drawing tool for teaching

The utility model relates to a drawing tool for teaching, which comprises compasses and an angle ruler, wherein the compasses comprise a positioning upright and a rotating upright, wherein the positioning upright of the compasses is fixed with the bottom edge of the angle ruler, the rotating upright...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: GAO JIANWEN, SANG RUIJUN
Format: Patent
Sprache:chi ; eng
Schlagworte:
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