Test procedure. The field of vision shall be determined by placing powerful light sources at the ocular points and examining the light reflected on the vertical monitoring screen. Other equivalent methods may be used.
Appears in 13 contracts
Test procedure. The field of vision shall be determined by placing powerful light sources at the ocular points and examining the light reflected on the vertical a monitoring screen. Other equivalent methods may be used.
Appears in 1 contract
Samples: unece.org