V-shape, cm
18,5 cm Gussrohr (metal pipe)
27,5 cm Wasserkreuzungspunkt (water line crossing)
31 cm Erdverwerfung (soil distortion)
33 cm Wasserader (water line)
37,5 cm Betonrohr (concrete pipe)
21 cm Globalnetz (global grid)
24 cm Diagionalnetz (diagonal grid)
42 cm Globalnetz (global grid)