Main Type 39
- Last UpdatedDec 01, 2025
- 1 minute read
This cutout type is a variant of the main types 20 and 21 with a circular "top" controlled as for main type 9, see the figures below

Figure 2:29. Main type 39, radii.
This cutout type is a variant of the main types 20 and 21 with a circular "top" controlled as for main type 9, see the figures below

Figure 2:29. Main type 39, radii.