Stay measurements

[Brian Duff]

its ok if the sheaves are off center a bit (such as double sheaves). To eliminate the possiblity of pulling the halyard harder on one side than the other, we tie the tail of the halyard to the shackle, and attach a steel measuring tape, then hoist to masthead and set up tight tight. The steel wont stretch, so your measures will be really accurate.

check that the mast step/ partners is centered between the rails of the boat, and that the chainplates are equdistant from the mast. if that is the case, split the difference of the measurements of the existing rigging port and starboard, then make the new rigging at the new numbers.

This is 'how its done'