Creating Annotation Dimensions Slot Location CATIA 3D

Creating Annotation Dimensions Slot Location CATIA 3D dimension a slot When using a 60mm rail and solid V-wheels the hole distance between straight and eccentric centres is meant to be , according to every dimension a slot dimension given in Figure 14 dimension of pole punching , Figure 14 field slot equivalent resistance of parallel circuit , Figure 13 opening at top

dimension slot or if not, what is a better way to make the callout? Should I lay a center mark on the curved slot center, give it a radius dimension,