Pictures of chassis at datum points "C" and "D", plus dimensions:
Datum point "C" (at tip of pen), right hand external view (left) and right hand internal view (right).
Frame height is 20 cm at this point:
Datum point "D" - the transfer case cross member - left hand external view (left) and left hand internal view (right).
Frame height is 20,5 cm at this point:
H.