Seems I have mentioned before that I don't just have a collection of this or that but do actually seem to have a collection containing numerous and various individual collections!
I just recently added a wholly formed minor collection of artifacts from the family of a rather famous man, at least in the world of precision and machining. Thus, I originally posted this new collection on the machine tool and machining board of the Forum ...... so see it there:
https://www.officeofsteamforum.com/machine-tools-machining-and-toolmaking/the-master-of-measurement/I've included some video links to help explain the significance of this man and of the precision revolution that he created!!!