That's and excellent tip, thanks!
Originally Posted by Despos
Go by the wrist, not the shirt.
Relax your arm, let it hang straight down. Bend your thumb up as if you are hitch hiking.
The notch/corner at the wrist above the bend of your thumb is a good length for your jacket sleeve. Shirt sleeve falls just below that point.
With this method you know if the shirt is too long or too short or if it is the jacket sleeve length that needs...