| 摘要 |
<p>This invention is a pocket or purse size device combining the features and uses of a writing instrument (12), a triangular rules scale and a straightedge (22), and having flat surfaces upon which a logo, advertising or similar material may be affixed. The device has a triangular outer sleeve, which may be integral with the writing instrument (12), or the sleeve may be removable from the writing instrument (12). The writing instrument (12) may be a ball point pen, pencil, mechanical pencil or similar writing tool. The triangular sleeve has features similar to an architect's or engineer's ruler. The sleeve may be used in place or removable from the writing instrument (12) for use as a ruler or straightedge (22). A logo or other material may be affixed to a surface of the triangular sleeve or to a surface of a cap (25) for the device.</p> |
