Height measurement. All measurements shall be taken in the median longitudinal plane of the designated seating position.
2.3.1. Determination of contact point (CP) (see Figure 10-1) Adjust the head restraint to the position intended for use by the mid-sized male0, as specified by the manufacturer. In the absence of any specification, the head restraint shall be adjusted as close as possible to the mid-position. If two positions of adjustment are equidistant from the mid-position, the head restraint shall be adjusted to the higher of the mid-position and/or rear of the mid-position. For head restraints not adjustable for height, the fixed position shall be used. If there is only one in-use position, this shall be treated as a head restraint which is not adjustable for height. The CP is defined as the intersection of a horizontal line, on the height of the Z-coordinate of the back-of-head of the mid-sized male (as given in Table 10-1), with the front surface of the head restraint as indicated in Figure 10-1. Once established, the point CP is a virtual seat reference point (x and z coordinates). Where CP cannot be determined because the horizontal line through the back-of-head of the mid-sized male is located above the head restraint, the head restraint must be raised to the next locking position to enable the determination of point CP. In the instance where this will not produce a point of intersection, the CP will be designated at the horizontal top of the head [restraint]. The horizontal top of the head restraint being defined as the uppermost point on the head restraint, which is determined by lowering a horizontal line in the median longitudinal plane of the designated seating position until it touches the head restraint (see Figure 10-4). Where more points are located at the same height, the longitudinally forward most point of the horizontal top of the head restraint is designated as CP.
Height measurement. All measurements shall be taken in the median longitudinal plane of the designated seating position.
Height measurement. Except where indicated as “(Zoning Height)” in Section 11(a) above: (i) the building heights referenced herein are measured to top of perimeter parapets at perimeter of roof; (ii) penthouse heights are given as height above the aforesaid “building height;”
