The deluxe marking wheel holder can be used with the 2 in 1 fat boy scriber for door fitting and (with the stainless steel plate removed) for furniture fitting, chair levelling and other tasks in the workshop.
Because the angle of the cutting wheel can be adjusted independent of the scriber there is no need to use washers which are necessary with the normal marking wheel for door fitting.
To tighten the hinge you will need an allen key (provided) and a 7mm ring spanner.