Not at all sure which method Philip Dalton advocated when he invented it.
As the Military are probably the only users of a "Dalton" Computer then its Wind Down.
If you own a Douglas Protractor, look at the inner scale, it reads 0 -360 in reverse; then compare it with say an Airtour Protractor and you will see it is calibrated in a totally different way! How many know how to use the inner scale on a real Douglas Protractor?