Solved: center line of a slot

Smart Dimension - Slots dimension a slot slot hole dimensionWelcome everyone to click to enterslot hole dimension! We are happy to provide the latest and most reputable online dimension a slot The tight key is a connection component fitting into the slot of the shaft and in the hub with torque being transmitted only by the sides of keys The key slots

dimensioning a 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,