3 datum processing

[dsquaredcri]

I have to measure the right position of a hole compared to 3 datum. the datum a has the theoretically exact size on the horizontal axis compared to the plane, the datum b on the angle compared to the cylinder on which lies (rotation, we are on a cylinder) here nothing strange. the problem however is that the third datum is placed on a hole, that is the position of the hole (only angular). how do you calculate the right position? Dissolved is analyzed with two variables in the formula of pitagora, is this instead a case where 3 variables should be used? Is it possible? i.e. formula: horizontal delta root^2 + angle delta ^2 + angular delta than datum c ^2??? ? ?

 

[lattu]

I didn't understand the problem. Can you do a sketch and post it, or be clearer in the description?

 

[lattu]

or better I assume that the data coincides with the cylinder height, for the data b I begin not to understand how the angle of a cylinder is located.... and what do you mean by the third datum is put on a hole?