a hinge or a lock

It's a beautiful weekend here, and it's the weekend of the town fair, and I've been taking so many pictures of so many things, but here are just a few.

First a question that popped into my head as I was admiring the hinges on this building at Cold Spring Orchard, when then my eyes fell on the lock.

Are you a hinge ...




or are you a lock?



(Oooh, that binary thinking! How about neither/both? How about not-applicable/unsure? How about could you please rephrase the question? )

The next picture I incl...