| 1.2. | With an illumination angle β of V = H = 0°, or the angle specified in paragraph 5. of this Regulation, and an angle of divergence of 20', retro-reflective devices which are not marked "TOP" shall be rotated about their axes of reference to the position of minimum CIL, which must conform to the value specified in paragraph 5. of this Regulation. When the CIL is measured for the other angles of illumination and divergence, the retro-reflective device shall be placed in the position corresponding to this value of ε. If the specified values are not attained, the device may be rotated about its axis of reference ± 5° from that position. | a0c0 |