Using rhino 6 or 7, this video shows how to create a section perspective drawing to scale at the section cut.
MM to Pt conversion chart
0.176mm (0.5pt)
0.123mm (0.35pt)
0.088mm (0.25pt)
0.063mm (0.18pt)
0.049mm (0.14pt)
0.035mm (0.1pt)
0.026mm (0.074pt)
0.018mm (0.051pt)
0.008mm (0.023pt)
0.004mm (0.012pt)