| 摘要 |
<p>A measuring brace is removably fastened to a spectacle frame. The measuring brace has a traverse and two legs. A front face of the measuring brace is provided with at least three front target marks for measuring the forward angle (alpha) of a spectacle frame to be measured. At least one of the front target marks is disposed spatially offset relative to the at least two other front target marks, essentially perpendicular to the front face of the measuring brace. The measuring brace has coupled clamping elements provided for fastening the spectacle frame (32). In addition, a measuring brace is suggested which is removably fixed to a spectacle frame and in which at least three lateral target marks (27, 27', 28, 28', 29, 29') are provided for measuring an angle of twist (epsilon). The invention also relates to an arrangement and a method for determining the forward tilt angle (alpha) and the angle of twist (epsilon) of a spectacle frame.</p> |
