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Device usable in the study of grammatical verbs in different languages (Machine-translation by Google Translate, not legally binding)
Device usable in the study of grammatical verbs in different languages (Machine-translation by Google Translate, not legally binding)
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机译：可用于研究不同语言的语法动词的设备（通过Google翻译进行机器翻译，不具有法律约束力）
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摘要
Device usable in the study of grammatical verbs in different languages characterized by comprising an "A" square with two concentric circles whose intermediate space is divided into 32 sections or equal parts, and two "B" and "C" discs that consist of an indicator or arrow in its upper part and a group of openings in its lower half. (Machine-translation by Google Translate, not legally binding)
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