The PG-13 allows for extremely large arcs or profiles that until today were not possible with a profile gage. These tools are great for modeling, architectural details, furniture making, floor and ceiling cutouts and a myriad of other applications where a clean cut profile spells the difference between craftsmanship and slop.
For simple moldings and depth readings, square the wire fingers of your profile gage by "profiling" a flat surface. Next, either push the tool against your profile or, for extremely delicate profiles it is easier to work the wires to the profile from the backside. The pressure bar keeps the fingers in place to allow tracing. In either case, the results are fantastic. It's important to note that with our articulated profile gages, you do not push your work into the fingers but instead push the steel fingers into the profile.