ervell and margiela measurements were requested by a few people so i might as well post them up here
thanks
margiela blazer
21 in chest
18 in shoulders
27 in sleeves
30 in from bottom of collar in the back to hem of jacket
ervell trench
chest (1 inch below pit) - 21.3 inches across
length (taken from bottom of collar in back all the way to bottom of trench- 31.5 inches
sleeves and shoulders: raglan sleeves so this is a bit tricky
but arbitrarily- shoulders are 18-19 and sleeves 26.5-27.