Good Morning! I have this part (shown below) that calls out a slot as the tertiary datum and I am having trouble trying to get the true position to show the MMC to .0002 for the callout for -D-. I am measuring it by taking 1 hit on each side of the slot and making a midpoint between the two. I am also not able to add the MMC modifier to either of the .100 TP or Perpendicular callout or the .125 TP callout. Is there a certain way to do this?
My best guess what somebody was thinking drawing this: they picked center of the slot only as D. Evaluate position of the center of the slot only to left callout [TP][0.0002(M)][A][B(M)]. For the right callout you need to evaluate entire center line of the slot up to intersection points with the arcs so basically what louisd said. It just other TP in respect to D @ MMC don't make sense since D have no size. You will have to use measured width as D.
My best guess what somebody was thinking drawing this: they picked center of the slot only as D. Evaluate position of the center of the slot only to left callout [TP][0.0002(M)][A][B(M)]. For the right callout you need to evaluate entire center line of the slot up to intersection points with the arcs so basically what louisd said. It just other TP in respect to D @ MMC don't make sense since D have no size. You will have to use measured width as D.
