| 摘要 |
<p>The method involves determining a position of a mark (18) e.g. cone-shaped mark, defining a mid plane of a spectacle frame (4) by using a positioning element (8), where the element is in the from of a horizontal bridge (12). A position of another cone-shaped mark (20) defining an orientation of a spectacle lens support with respect to the mid-plane of the frame is determined by using another positioning element (10). An angle between the two marks is measured by using a determination unit when the elements are adjusted on the frame, where the angle defines a curving contour of the frame. An independent claim is also included for a spectacle frame`s curving contour measuring device comprising a positioning element.</p> |
