| 摘要 |
<p>The device comprises a base plate attached to a holder to which are fitted adjacent to each other holders for marking types made from heat resisting chalk rubber. In the prefd. design, the type holders consist of a base with a helical spring, to the top of which is marked the type holding platform. The holders are slid into the base plate, which has raised edges are slid into the base plate, which has raised edges with grooves on three sides from one side.</p> |
