I recently did an associates degree and in my blueprint reading class they never taught me what v. means, all they taught was counterbores, countersinks and such but I dont recognize the V that is in the blueprint for the boring head. sheet 3 of 5 of the blueprints front view center hole right below the 9/32 counterbore. Usually we dont have an X there what does the X mean this is how I know it to be written: 9/32 meaning diameter of counterbore, .61 depth of counterbore. I dont understand what the x is suppose to be there for. As far as the V goes what does V mean? its the v.38x.30. there is more on the left view it shows the v9/32x.50 and under that it shows v13/32x.25 I drew this whole thing up on solidworks the hole in the nut does not line up with the hole in the dovetailed portion that has the hole for the 1/4 20 screw. I went over my prints over and over again trying to find some reason why it doesnt line up perfectly all I can think of is my holes are not accurate, but i cant see how they couldnt be accurate considering they receive a 1/4 20. If this message looks strange its because my wife dictated it for me she is so great to do such a thing for me, however I am an idiot because i dont know what the v thing stands for. Please help!