Can anyone tell me what this is?

That's cool with me! I find it also irritating . I'm happy that you are going to fill in the blanks of those threads that just leave us hanging.
 

A psychotic amphibious Rastafarian bell ringer.
 

Just because it has twin sticks doesn't mean it's an Atlas. My old Jeep had two sticks, one for in/out, the other for high/low. My Dana 300 also has two sticks, one is for front axle high/neutral/low, and the other is exactly the same for the rear axle. I also have manual locking hubs. Imagine the possibilities.
 
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