describe the procedure for drawing a true length projection of
an oblique line from the frontal view,
- Establish a line of sight perpendicular to oblique line 1-2
in the frontal view. - Draws fold line F/A perpendicular to the line of sight and
parallel to the oblique line 1F-2F
Figure 7.15 True lengths of oblique lines
- Extend projection lines from point 1F and 2F perpendicular
to the fold line and parallel to the line of sight.