I have been measured twice as 19.5 inches in the shoulders. While considering buying a suit on-line I realize all my suits and SC are 18.50 to 19 inches measured in the back seam to seam
Is this normal for slimmer fitting stuff? And do most error on slightly smaller shoulders rather than a little too big?
Who did the measuring? If your current wardrobe consists of well fitting jackets, I suggest using their actual measurements to aid in your online search.