What is this device called beside switch controller
#2
I'm guessing that's a model railroad setup.
So that would be something that someone modified to switch tracks.
Manual hold down toggle clamp
So that would be something that someone modified to switch tracks.
Manual hold down toggle clamp
#3
In general I call anything like that a "Destaco" clamp. It's a lever and mechanical linkage that will lock in position by going over center. They are great for clamping parts.