Furthermore, {HEAD ~ the same parts} may be expressed with {TAIL ~ different sizes} and ratios in different drawings 
Furthermore , { HEAD ~ the same parts } may be expressed with { TAIL ~ different sizes } and ratios in different drawings
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH