Lots of info in the (older) catalogues of Goodridge. Could be that they delivered the Original stuff
Looked for "/3" hoses and that gives a JIC 3/8 but I can't figure out what that gives in mm or inch.
I can check an adapter (blue alu) tomorrow on one of the bikes. Now too dark and cold.
But then I have to look for the thread"caliper"
and where did I put that
ciao
ducadini