Actually, tire is on wheel now, but will be coming off soon. A picture would just show a void at the rim end of the nipple. The spoke end is perhaps 5-6 mm below the screwdriver slot in the nipple. To measure, I put a thin wire in to test depth. After reading here I am not comfortable with it anymore and I have another wheel to use, and perhaps I will get a vintage Schwinn one from the co-op that I found a few years ago as my interests grew. Perhaps even a junk wheel for cheap that I could salvage the spokes from. I will try to get a picture up.