Pat, I think we have a spine tester, but I havn't used it so you might bring yours. We have the multi-fletcher, and I'm sure there are probably a couple of bitzenbergers around as well. So yes, bring your spine tester...can leave the fletcher at home.
I'm having some timber cut on my place today, so I might have bark aplenty...just not the right type. I have a bow in mine for the birch bark you're bringing. Thanks!