Miter Set vs Incra Miter Gauge
Got the Segment Jig in the mail the other day and just had a chance to open the box - as has been said, this is an extremely well made piece of equipment.
First thing that I did was check it with the Incra gauge. After taking the tab off the end, I put the pins in the holes for an 8-sided segment (the holes for 5, 6, 7 & 8 are relatively close to each other, the results would be the same). With a 6" scale set over the pins (as was said, the face of the Incra gauge is short so a wooden face would be recommended), I set the Incra to the pins and then wiggled it to check the fit - it was noticeably loose in the slot of the Miter Set. Turning the assembly on it's side, it was obvious that the rear adjustment button (?) in the Incra was not engaged in the slot. A closer check shows that the distance between the two rear buttons on the Incra is about the same as the length of the Miter Set - this would explain why the Incra reportedly gives inconsistent results. If you had a spare hand, you could push the Incra to the right (the black buttons are the non-adjustable ones, right?) and then push the head against the pins and tighten down.
So I guess it's on to Plan "B". I ordered the ball plungers shown in the last two photos - bought #8's now wondering if I should have gone with the #10's, but I can always drill out the smaller holes and retap if it becomes a problem - and will tap the bar on my OEM Delta gauge, making sure that I'll always have at least two plungers in contact. May take me a while to get around to this with everything that's going on.