I've got this old gearbox drawing. For the position of all the holes, they're all called out this way "...LOCATED WITHIN .005 R OF TRUE POSITION". I've never seen that before, the "R". I know R is for radius, but am I going to be missing something if I just use a straight up .005 TP tolerance for these? All the holes are dimensioned quite clearly with X and Y basics coming off C/L of the part, which is cool.
Any old timers here know WTH?
