no guard (closed) - 0
1 guard (closed) 1 guard (open) - 1.5
shading guards
0.5 filler guard (closed) 0.5 filler guard (open) - 0.75
shorter
no guard (open) - 0.5
1.5 filler guard (closed) 1.5 filler guard (open) - 1.75 2 guard (closed) 2 guard (open) - 2.5
5 guard (closed) 5 guard (open) - 5.5 6 guard (closed) 6 guard (open) - 6.5 7 guard (closed) 7 guard (open) - 7.5 8 guard (closed) 8 guard (open) - 8.5
longer
4 guard (closed) 4 guard (open) - 4.5
shaping guards
3 guard (closed) 3 guard (open) - 3.5