I've got a click adjusting wossname for Fords, but that has the 1/2 " AF socket and the slotted screwdriver adjuster. The principle of The X Flows that I've messed with recently have all had the hollow adjuster with the self locking feature. (Presumably to reduce the reciprocating mass.) This includes the Zetec E ? (X Flow).
A click adjuste (er) can't work with this configuration. The principle of the click adjuster, however, can;
The idea is that you loosen the locking nut with the handle, torque down the adjuster until it contacts the valve stem and the central screwdriver clicks (as a torque limiter.) Next, undo the central screwdriver a prescribed number of clicks (in other words, a specified angular rotation), and lock up the locknut with the handle.
The principle being that of a micrometer;
at 40 teeth per inch, a complete revolution of the handle will open the jaws by 25 thousands of an inch (in old money). Therefore, a 1 thou gap will be generated by a 25th of a revolution and so on.
So,
If you know how many teeth per inch you have on your adjuster, then you can calculate the angular rotation required for a given gap.
QED.
Don't I run on ?