DOUBLE BREASTED CONTINENTAL JACKET Outline your sloper with full jacket length Back panel A = 1/2 neck to chest B to C = 1” E to D = ¾” Connect A to C to E to finish center back F = 2 ½” above chest G to I = 1 ¼” H to J = ¼” Connect F to I with hip curve ruler Connect I to J with straight line to finish back panel BACK SIDE PANEL G to K = ¼” H to L =1 ¼” Connect F to K with hip curve ruler Connect K to L with straight line M to N to O = side guideline N = 1” above waistline N to P = ¼” O to Q = ¾” Connect M to P with hip curve ruler Connect P to Q with straight line to finish back side panel. FRONT SIDE PANEL M to R = ½” N to S ¾” O to T = ¼” Connect R to S with hip curve ruler Connect S to T with straight line U = 3” above chest line V to W = 1-1/2” V to X = 3/4” Y to Z = 1” Connect U to X with hip curve ruler Connect X to Z with straight line to finish front side panel FRONT PANEL Connect U to V with hip curve ruler Connect V to Z with straight line I = center front at waist 1 to 2 = 1 ½” 2 to 3 = 2 ½” for extension 4 = shoulder at neck point 4 to 5 = collar stand Connect 3 to 5 to establish roll line Extend neckline to 6 Square off from 7 to 6 for width of lapel 6 to 8 = 3 Connect 8 to 3 with hp curve ruler, using deeper curve toward 3 9 = neck point Connect 8 to 9 to finish lapel 10 = center front at hem 10 to 11 =2 ½” 11 to 12 = ½” Connect 3 to 12 13 = 1/2 10 to Y Connect 13 to L with shallow curve to finish jacket .        

{Credit}Masaaki Kawashima’s Buy this book from Amazon

Fundamentals of Men’s Fashion Design: A Guide to Tailored Clothes