Brad, good question. First, I am sure 2' scribe rule is present.
2nd, I have seen four bent frames laid out with ref. faces toward each other/threshing floor, no 2' scribe marks. Am I correct in saying these are not Fench framing styles? What do French marriage marks look like? I would find it very interesting to discover a French presence in Down East Maine. I would be greatfull for any help in determining such a presence. Tim