Roger,
It should be obvious from the markings on the feedscrew dials … but things are not always as they seem.
I suggest you measure the actual travel of each slide [for at least ten full turns of the dial], for confidence.
MichaelG.
.
P.S. … I've just found this on YouTube, which may be of interest.
Edited By Michael Gilligan on 25/04/2016 08:35:40