Does this thing flip over?

[suobs]

The part of the main (150 amp, older GE panel) switch in the photo below that the green arrow points to looks like some kind of extension to widen the switch itself.

It looks like it might be designed to flip over or be removed if necessary.  Does anyone know if it can be flipped to the other side (the upper side in the photo) of the switch? I've tried with gentle pressure but it doesn't seem to want to move, don't want to force it. But then it's old. 

I ask because the space used by the metal extension is preventing installation of a generator interlock device that was designed specifically for the panel.

 

[Jim Katen]

It's just a handle extension to give the user more leverage. You should be able to rotate it up 90 degrees and the transfer linkage should just slip over it.