Sleeve development

Trace off front and back blocks with main reference lines and points.
Mark points 10 and 29 as arm pivot points.
Extend shoulder lines, to become overarm lines; (For size 100, neck point to wrist = 82 cm)
Front: Extend line from 24 through 27 to point 31a, 24 - 31a = 82 cm
Back: Extend line from 8 through 13 to point 31b, 8 - 31b

Front

Square out from overarm line at point 31a to provide wrist line.
31a - 32, half finished wrist measurement minus 1 cm.
Draw line from point 29 through 21a and mark new point 21c 1 cm beyond 21a
Draw an arc (with point 29 as central pivot point) which passes through point 21c. Swing this arc towards centre of chest area on front block.
Dependant on degree of armlift required, mark point 34 on this arc; (ie; straight measurement 21c - 34 = 15 cm.)
Join 34 - 32; This line can be slightly hollowed according to design and appropriate to intended end use.