Hi everyone. Have a question regarding slot boundary. First, I am a CMM programmer and have this part to measure. I do not come across slots that often so when I do I normally question a few things. I will attach a image for you guys to check out. Obviously here I am checking the True Position of Datum C, but I see that there is a lack of a diametrical tolerance zone for the slot. So..
Question 1) What is the lack of the DTZ implying?
Question 2) How is the .8 applied and in which direction since the width of the slot stops rotation?