how to determine hose sizes??

[Mark Novak]

Just a quick question---------When one talks about hose sizes----is the
measure the inside diameter of the hose in question.  And secondly, am
considering the replacement of the non pressure hose going from the
reservoir to the brake pressure accumulator and was wondering how one knows
what hose size to order up---are these hose sizes known at the dealers
parts catalog???  Or do you just have to measure them once you have the
hose to measure????  Noticed a place called mdmetric.com that has all kinds
of hoses and thought about ordering some hoses from them.