ISO Flat Head double rider or Delraiser size 38

[Jasonissm]

Does anyone has pictures of the measurements for the flat head double riders 38 laid flat (shoulder, sleeves, waist, chest) every website I look their measurements are different, im very confused, I want to try this jacket and would like to get it right on the first try

Probably ask the store to measure a jacket that have in stock if you want to buy online and can't try on. The fits can change slightly depending on year so it's best you get the measurements of the jacket that is actually available for sale.