I would expect the French inch to have been abandoned at the Revolution when they switched to the metric system… however I guess English inches could have been reintroduced (in a sort of culture wars of the time maybe???) at the Restauration? I am very surprised by that statement, it is very interesting and worthy of inquiry!
I would expect the French inch to have been abandoned at the Revolution when they switched to the metric system… however I guess English inches could have been reintroduced (in a sort of culture wars of the time maybe???) at the Restauration? I am very surprised by that statement, it is very interesting and worthy of inquiry!I ran into this same sort of question on my current project. What I learned was that in the late 17th century the French were definitely using the French inch (on my build I am doing all conversions based on that and building accordingly). But there was apparently a time that the French inch was abandoned, and the English inch was adopted (officially in 1824 but practically speaking considerably earlier). Anyway, I don't know the 'year' of your longboat so English inches may have been the standard. Or maybe not.