Those increments/scales still exist. They are the distance a full 100% hit would travel on a 10 green that is flat, when using each scale. They really aren't increments per sey. What your are talking about is putter movements and there were a different distance in each scale. What your are showing is putter scales, not increments.
Here is an example-on both the 15 and 30 foot scales there were 6.5 movements, from 0 to 15/30. The 45/60 had 10 movements. The 90/100 had 13. The 150 had 11, I don't have the 300, as I never had to putt from that distance. That all changed with PCEA, a very fast 10 green became a divide by 1.0