Mechanical device, equipment, compass? Art display, antique, retro, Showa era

This appears to be a part that came off some kind of machine.
It has white and blue arrows, so it looks like a compass, but I'm not sure.
The arrows move around, but they can be fixed by turning the round button-like part.

It looks cool just to display it.
Display.
I think it could also be used for art pieces or something similar.

It is an old item and has some damage.
Please purchase with the understanding that it is an antique or retro item.

#Antique
#Retro
#Display
#Art
#Showa
#Compass