Ruler box for accounting teaching

The utility model discloses a ruler box for accounting teaching. The ruler box comprises a right cover and a left cover, wherein the right cover and the left cover are respectively a hollowed frame and are connected with each other through a hinge. Surrounding edges are arranged on the same sides of...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SUN QINGJUAN, YANG YANPING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PERFORMING OPERATIONS PHYSICS TESTING TRANSPORTING WRITING OR DRAWING IMPLEMENTS
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