Point detail

In cases where the cleaner comprises a wiper, paragraph 6.3.2. above shall not apply to the wiper blades or to any supporting members. However, these units shall be so made as to have no sharp angles or pointed or cutting parts of a non-functional nature. Any wiper shaft shall be furnished with a protective casing having a radius of curvature of not less than 2.5 mm and a surface of not less than 50 mm2;