ervell trench measurements were requested so by two people so i might as well post them up here...
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.