04-20-2012, 08:47 AM
I drew that to, and my dimensions are from, the mid-tolerance sizes. That means for the 0.8350 +0/- 0.005 I drew to 0.8325. That should give you the correct calculations for what you seek. Same deal on the other dimension I bet. I didn't do the calculations, but if you are using the 0.164, you won't get the same thing I have using the mid-tolerance value of 0.1540.
I will grant you that engineering schools and standards teach that unilateral dimensions express the desired actual dimensions, then make allowance for manufacturing. In other words, the designers want the 0.835 dimension to be held at that rather than 0.8325, but allow it to be smaller.
I will grant you that engineering schools and standards teach that unilateral dimensions express the desired actual dimensions, then make allowance for manufacturing. In other words, the designers want the 0.835 dimension to be held at that rather than 0.8325, but allow it to be smaller.