There are 23 pleats across the back of the kilt (I wish I had had another 1/2 yard, I would have loved to make 29 narrower pleats but to maintain the proper center back stripe there just was no way with the fabric I have. Next time, I'll ask DGD's teacher to get a full 4 yards of tartan).
Each pleat is 51/64 inch (or .796875") at the hip, tapering to 15/32 inch (.46875") at the waist. As of today, the front apron is basted, the left side of the apron is stitched down and the first 8 pleats are pressed and stitched. Just 15 to go...
Then stitch the right side box pleat, finish the aprons including the double fringe, sew the hem, and do all the complicated "inside" stuff, and press.
;-)
Beverly