here's one for you, not really a miss measure. About 5 years ago i made a triple wardrobe for a customer, no problem with that.
A year ago they asked me to make another one for another bedroom exactly the same size as the first, so i measured the original
wardrobe and made the new one. On the day of delivery and armed with a helper, but try as we could it would not go up the stairs
i measured the original one again and they were both identical. After a lot of head scratching the customer then told me that during
the time from the 1st and 2nd wardrobes they had a new stairs fitted and the new one had a 1inch lower headroom. Had to take the
new wardrobe away and cut it in half and stitch it back together on site.