I found this in my fathers shed having a clear-out, he was a maintenance fitter years ago. looks like some sort of cutter, had a try but cant make it out, any ideas what this was used for.
I have a feeling we have seen one of these before and if I am right it is a grooving tool used in woodworking. It cuts in both directions, when set correctly with one tip acting as the support for the one opposite while it shaves the bottom of the groove.
Yes that is what I was thinking Brian, the two parts held by the wing nut set depth and distance from an edge then the tool is drawn towards the user and the shallower angled "blade" acts like the sole of a plane and limits the depth the more vertical "blade" can cut.