| 摘要 |
<p>The marking tool is for work pieces and has a base with a vertical column fastened to it. The column carries a slide, with a horizontal marking scriber. The foot (1) contains a motor (2) with a coupled helical spindle (5), extending into the tubular column (3). The spindle carries a threaded nut (6) with noses (7) projecting into longitudinal slots (4) in the rod. The slide (8) is fastened to the nut via studs or similar. The foot contains a calculator (10), switched in front of the motor, and controlling it. The calculator has a call button. The rod carries a digital scale, and the slide contains photo cells to scan the scale. Impulses from the photo cells are fed to the calculator.</p> |
