I visited a old barn the other day which was some what different than most. Most barns of this type are scribed. They are typically 4 bents with a dropped tie and a lower binding beam, continuous top plates, the center bay is referenced and marriage marks present and continuous top plates. The barn in question appears to be a square rule building in that it is referenced from the east face of the first three bents, the last to the outside of the west bent. No marriage marks are noticeable. The main members are hewn and scantlings are sawn. I am lead to believe square rule joinery has housings and reduction, this is what I do. This barn has none, the joinery is similar to scribe but where members come together there are broad hewn housings with the brace looking like a scribe or mill rule, no reduction. Has anyone seen this as well and is it square rule? Tim