About this detail of the Tiger
The turret is diagrammed in a book called Tiger Turret Manual. It describes the turret with both early and mid variations. Sadly, there is no comparable manual for the hull.
The center line of the turret goes precisely through the center line of the gun in all versions, a fact that is missed in many modern diagrams.
The "mid" traverse mechanism at the left side is similar to that in early Tigers but not identical. The difference is that on top of the main traverse gearbox (labelled "Turmschenkwerk") there is a new, odd-shaped housing from which leads a long rod that drives the turret position indicator in the cupola. In the early Tiger, this indicator was driven from a small gearbox down on the turret ring. There is also a rod leading forward from this housing, driving the gunner's "clock" position indicator. The early Tiger had a similar indicator but its drive rod went to the bottom of the gearbox rather than the top.
On the right of the commanders' seat is the gun balance mechanism.
The gunner's seat and his pedals are the same as on the early Tiger. His traverse handwheel is the same. The gearbox on the turret floor, and the drive shaft leading up from it, are unchanged. The gunner's seat is attached to a Brucke (bridge) that runs under the gun all the way across the turret. This tube is changed significantly from the one in the early turret.