| 摘要 |
<p>The instrument has an elongated body (1) comprising ends (16, 17) respectively provided with openings (18, 19). Retractable writing points (29, 30) are located towards the end (16) and selectively released through the opening (18). Other retractable writing points (31, 32) are located towards the end (17) and selectively released through the opening (19). Selection wings (33, 34) select and release one of the points (29, 30). Other selection wings (35, 36) is independent from the wings (33, 34), and selects and releases one of the points (31, 32).</p> |
