Hello, can someone please explain what this gd&t is specifically asking? i realize you cannot see the entire print. the reason im asking is because the aerospace company i am making the part for says the callout is asking to hold the shpericity or roundness to +/-.001. im trying to explain to these people they are wrong. and this is not what it means at all. how can i get proof of what this gd&t call out actually means?