Yes, that picture is better, but it is not exactly what Dave's exercise would yield.
With Dave's instructions, the pre-pivot alignment for shots A, B, and C in that picture would not all be on the same line. They would be 3 separate lines, from the offset position to the center of each OB. The more distant the OB is from the CB, the less angled the pre-pivot line would be relative to the line of centers through the CB and OB.
And then the pivot back to center CB would likely produce different shot lines for each of the shots A, B, and C, rather than the single line of travel of the CB shown in the picture.
But the effect of distance on the cut angle would still be present.
Dave's diagram is not what has been discussed earlier. The starting position is to aim the center of the CB at the center of the OB. The diagram looks like the starting position is aiming the cue at the left 1/8 of the CB at the left 1/8 of the OB for A, B and C pre-pivot.
This starting position (1/8 from the edge) perhaps represents the parallel shift to the side from the discussed center of the CB aimed at the center of the OB and way more than the aforementioned 1/2 tip offset pre-pivot.
Shifting the cue 1/2 tip (.25") to the side and parallel to the C2C line of the CB and then pivoting back to the CB center creates an included angle at the bridge.
Assuming that the bridge is 12" behind the CB, that the 1/2 tip is .25" then the created included angle is 1.2 degrees...all the way down the table.:smile: But we all knew that.
Just saying.
Be well
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