I've mowed using a Snapper mower off and on for 15 some years and I... don't really have a clue to what the height adjusters equate to in regards to inches. When I used to work with a crew, we'd just talk about the notches, like, "set it on 3-3, or 4-5, etc.," especially if we were across the lawn from each other and using sign language. I mean, looking at the mowers, notches aren't even numbered. Now, in and of itself, that would not be a problem if my company all used Snappers, but I'm the only one; the other, separate crew, uses Scags and Honda's. Since I'm starting to read and post here to become more knowledgeable, I figure maybe I should at least have a rough idea so that I can better understand others and they can understand me - when it comes to height settings, that is. I'm currently cutting most of my lawns at 4-4 (measured from the engine side going away). What are other 21" Snapper users cutting at?