a screw working tangentially upon a toothed circle or arc so as to give it a slow motion for delicate measurements or adjustments.
| 单词 | θ117477 |
| 释义 | the world > relative properties > measurement > measuring instrument > [noun] > graduated instruments > graduated scale > movable scale or vernier > adjustment screw (1) tangent screw1862 a screw working tangentially upon a toothed circle or arc so as to give it a slow motion for delicate measurements or adjustments. |
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