Sail Measurement regulations Raven 26.
Mainsail . Measurements converted to metric to closest .001mm.
Max stretched length Minimum Length
Luff 8.625 8.503
Leech 9.113 8.93
Foot 3.139 3.017
25% = 1070 max, 50%= 1850 max, 75%=2510 max.
Fold head to luff half way point,fold head to leech half height=25%. Fold tack to luff half point,fold clew to leech half point=75% line.