Iron Shutter
First, from today's 200x photo.
It looks like an iron shutter that you often saw in the Showa era.
It is lined up beautifully and I feel considerable precision.
It must be some kind of metal member, but is it some kind of part?
Here's a 1x photo.
It was a stapler needle.
By the way, stapler is a trademark, so the common noun is stapler.
It seems to be a 紙綴器(Kamitsuzuki) if it is Japanese and kanji.
I found out for the first time after researching it.
Even so, it is made quite precisely, and there is no roughness even at 200x.
The mechanism for punching this needle is also excellent.
Stationery is really great.
