I have a 74 dufour 35 with a marco polo mast looking for spreaders or the dimensions of them. The originals are missing and I need replacements or the length of them. Anyone able to help thanks.
You don't say who the manufacturer is, but this may be helpful:Francespar Main Page
Selden also makes a lot of European spars: Seldén Mast AB
There should be a plate on the mast, or some other indication of the manufacturer somewhere! You do want to get the right size so the mast doesn't suddenly end up on deck.