¾ sett? My first impression was ½ sett (a term Barb coined), but as she didn't use it in her post I had to take a second look.
Looking at the hem, and what appear to be pleats of different depths - would I be wrong in guessing that this is a 4-5 yd kilt? My 5yd Hunting Robertsons show similar deviations from pleating to the sett.