| 摘要 |
<p>The recorder device allows the manual drawing of all kinds of diagrams. It comprises a frame (1) supporting a band (3) with side perforations allowing the unthreading of the band either at the constant speed, or as a function of a phenomenon to be watched. A block (5) presenting slots (7, 8, 9) allows the user to draw diagrams (a, b) by using a drawing instrument (10), for example a pencil. </p> |
