The Assembly Line Blazer is a classic - with a slightly oversized fit; a classic collar with lapel; and a unique pocket flap with fake pocket – the pocket opening is instead hidden in the front side seam. The jacket features a single button closure, back slits and a mock sleeve slit.

The pattern includes an unlined version as well as a lined sleeve version. 

Currently available in size range XS-L.
The straight and medium-wide shape gives an easy fit so use your chest measurement for sizing.  See last image for details. 

Difficulty: Advanced

Suitable fabrics:  Medium to heavyweight suitings or lightweight coatings with surface texture such as wool suiting, velvet, cotton drill, medium-heavy weight cotton and linen may also be used. Please note: tightly woven, smooth surfaced suitings like wool gabardine are not recommended since they can be difficult to fuse using an iron.

Fabric requirements:

110-120 cm fabric width
XS 2.9 m / S 2.9 m / M 3.1 m / L 3.2 m

140-150 cm fabric width
XS 2.4 m / S 2.4 m / M 2.5 m / L 2.5 m

Lining fabric 140-150 cm - optional
XS-L 0.7 m

You will also need:

• Fusible interfacing
  
• 1 x 20mm button
  
• 8 x 10mm button (sleeves)
  
• Bias binding for bottom hem (optional): XS 120 cm, S 125 cm, M 135 cm, L 145 cm  
• Bias binding for bottom hem front and back facing edges (optional): XS 285 cm, S 300 cm, M 315 cm, L 330 cm
• Pair of small shoulder pads (optional)
• For removable shoulder pads (optional): Velcro (hook and loop) 2 x 8 cm

Photo credits: The Assembly Line